Is it possible to measure the basal temperature in the evening. Measurement of basal temperature: basic rules. Basal body temperature during pregnancy

Content

Basal body temperature (BBT) shows a woman when pregnancy and ovulation can occur. They measure it in a certain way: early in the morning, just waking up, at rest. Any thermometer is suitable for measurements, the time required is 3-6 minutes. Everything is simple, and the results clarify many points.

What is basal temperature and how to measure it

BBT is body temperature, which is measured in the rectum early in the morning, without getting out of bed. This will allow you to find out whether ovulation or egg maturation is currently taking place, on which days conception is possible. Basal temperature will indicate the imminent onset of menstruation, changes in the cycle, help in planning and detecting pregnancy or diagnosing some gynecological problems in the body.

How to measure basal temperature at home:

It is necessary to measure BBT from the first day of the arrival of menstruation.
The thermometer should be placed in the rectum, not in the vagina. The rectal method gives accurate data.
The device should be held for 3 minutes.
Measurements must be taken daily for 2-3 months at one hour.
It is better to do it in the morning, after waking up, right in bed. BBT may differ by 1 degree if you measured it in the evening.

Why you need to measure basal temperature

When menses come hormonal background women undergoing change. The increase in the amount of progesterone is immediately displayed in numbers on the thermometer:

When the egg matures high level estrogen), BTT is low.
After this phase, it rises again.
On average, an increase in thermometer readings reaches 0.4-0.8 degrees Celsius and indicates that ovulation has occurred.

The days before and during ovulation are favorable for conception. You need to know how to correctly measure basal temperature to determine ovulation. It is important to first clarify all the points for yourself in order to keep a schedule, entering indicators into it with the necessary regularity. Such records will help the doctor to get a picture of what is happening, and over time, the woman herself will understand the numbers.

How to measure basal temperature to determine pregnancy

How to measure basal temperature to determine pregnancy? The measurement should be made during the period of maximum rest, which is sleep. Since this is impossible, you need to get as close to the ideal as possible and measure it early in the morning when you are extremely calm. It makes no sense to find out the data if you accept hormonal preparations or antidepressants, and even against the background of alcohol consumption.

What thermometer to measure basal temperature

There are three types of thermometers for these purposes: electronic, mercury and infrared. The latter are least suitable for such a measurement. With mercury, you should be extremely careful, because during the measurement early in the morning, being sleepy, you can break it. It is unacceptable to change measuring device otherwise errors cannot be avoided. Do you want to use a regular thermometer or change it to a more advanced one? No problem, but choose the device for a long time.

How to measure basal temperature with a mercury thermometer

Accurate data can be achieved using a mercury thermometer, but even in this case it is possible to measure incorrectly. The thermometer can be entered incorrectly or removed too quickly. Given the danger of mercury, this type of thermometer is less commonly used. How to measure basal temperature with a regular thermometer:

the tip of the thermometer can be lubricated with ordinary oil (vegetable) or petroleum jelly;
then gently insert the device into the anus;
wait 5 minutes, lying with your eyes closed in a state close to sleep.

How to measure basal temperature to determine ovulation with a digital thermometer

Electronic devices are easy to use but have a bad reputation for not being accurate enough. To achieve the desired result, follow the instructions: so, using the oral method, close your mouth as tightly as possible so that the thermometer does not show a value less than it actually is. As a rule, the end of the measurement is indicated by a sound signal.

The greatest advantage of such devices (and the reason for the recommendations of doctors) is their safety:

If you drop it while you are asleep or it breaks in your hands, it will not cause you any harm.
The flexible tip makes the instruments comfortable to use, they are waterproof and take measurements faster.

How long does it take to take a temperature

Regardless of the method you choose, the time for this process will remain the same. How to measure basal temperature correctly? It's simple:

The thermometer lasts 5-7 minutes. All this time you should remain motionless.
The thermometer itself must be prepared in advance and placed near the bed so that in the morning you do not make any unnecessary movements that could affect the data.
The time when the temperature will be measured must be observed to the nearest quarter of an hour.

Not all women manage to get pregnant quickly after getting married. Yes, and the test can not always show the fact of conception on early dates. One hundred percent readings can be given almost immediately by measuring the temperature in a certain way. How to measure basal temperature to determine pregnancy and will be discussed today.

For the sake of the effectiveness of the indicators, you will have to spend time on drawing up a certain schedule. Basal temperature (BT) also shows the onset of ovulation and various hormonal changes. It is measured at rest by methods such as rectal, vaginal, or oral.

First you need to understand the mechanism of the graph (scale with temperature indicators).

These numbers are influenced by many factors, such as drastic changes in diet or lifestyle, but not only:

deviations in hormonal levels;
if you smoke or abuse alcohol;
being in constant stress;
change of residence or change of climate zone;
pathologies of internal organs and colds.

Important: with constant temperature measurement, it is possible to detect a problem at the level of hormones that prevent pregnancy, and accordingly, promptly take measures to restore it.

To obtain the most reliable indicators, it is necessary to measure correctly - in the morning immediately after waking up, without getting out of bed. Every day, these manipulations should be carried out at the same time - an allowable error of 30 minutes. And one more rule - to carry out measurements in one of the three chosen ways, that is, if you did it orally on the first day, then all subsequent days should be carried out only in this way.

What thermometer to use

If we talk about a thermometer for such measurements, then any one is suitable - digital or mercury. If we compare them, then a mercury thermometer gives more accurate information, but a digital one (the error is 0.2-0.3 degrees) is more convenient to use.

You will receive complete information when measuring basal temperature for 3-4 cycles.

How long to measure

It is not advisable to get out of bed at night for any needs - the measurement is done after you wake up and immediately. If this happened at night, then you are measuring at this moment. But remember that the next day you will need to wake up at about the same time, otherwise the information will be distorted.

The measurement time depends on the selected measurement method:

by oral 4 to 5 minutes under the tongue;
rectal up to 8 minutes by inserting a thermometer into the rectum by 5 cm;
vaginal mercury lasts up to 8 minutes;
electronic 10-15 seconds or until the signal, entering the vagina halfway.

Perhaps you are interested in the question - is it possible to measure the basal temperature in the evening? It is better not to do this, since at this time of day the indicators are always higher than in the morning. With constant nighttime wakefulness, measure BBT during the day immediately after waking up, but sleep should last at least 5 hours in a row.

What the measured values show

Regularly measured BBT lets you know how hormone levels fluctuate throughout the cycle, how it deviates, shows the day of ovulation and conception. The basal temperature chart also helps to identify the reason for the delay in menstruation.

With the help of such measurements, it is possible to identify disorders in the body due to a malfunction in the hormonal system. If you are protected by the calendar method, then this method is also shown. It is also possible to plan the gender of the unborn child if BT data is used. With unsuccessful attempts to get pregnant and if infertility is suspected, a similar method can help.

How to chart your basal temperature

Basal temperature is an indicator recorded at rest, which is not affected by external factors, heat, stress, and so on. The results are taken every day in the morning after at least 6 hours of sleep. It is best to do this rectally, which will give the most reliable indicators.

Bring down the thermometer to 34-35 degrees and insert into the anus at the required distance. After the specified time, remove it, and write the result in a notebook, making notes about existing violations, for example, alcohol taken the day before, bad sleep, and so on. And so every morning.

In the first phase of the cycle, the temperature will be from 36.4 to 36.6 degrees. Ovulation raises this level to 36.9-37.1. The day of ovulation, or when the temperature drops, is the most favorable for conception. If the temperature is too high or low, we can talk about existing violations, to identify which you need to contact a gynecologist.

It will be possible to talk about accurate diagnostics after temperature measurements for three cycles in a row.

Important: drinking in the evening before measuring alcohol affects the results. Certain medications work the same way.

And if you drink hormonal contraceptives, then such manipulations are generally meaningless, since any useful information will be missing.

Early indications and definitions

An important hormone for attaching a fertilized egg to the uterine wall is progesterone, and it is most abundant during ovulation. It is thanks to this process that BT in the early stages of pregnancy reaches values from 37 to 37.3 degrees.

BT during pregnancy: norm and deviations

The above figures will indicate the normal development of the process. Although it happens that the temperature reaches up to 38 degrees, which is explained by the individual characteristics of the woman's body. But just in case, with such indicators, you need to visit a doctor.

The determination of BT is also carried out in the morning after waking up at the same time. Eating, emotional overload or physical, greatly affects the basal temperature, which is why it makes no sense to do this in the afternoon or evening.

If there is a low temperature in phase 2, then there is a risk of miscarriage. Similar indicators in a non-pregnant woman will indicate possible infertility.

An appeal to a specialist will be required if the numbers are less than 37 degrees or more than 38. In the first case, this is a lack of progesterone, which is dangerous for the baby, and in the second, the development of some kind of inflammatory process.

Diagnosis of pathologies using BT

There are a number of diseases that directly affect the BT schedule, for example, with endometritis, the temperature rises to 37 degrees, keeping it that way even when menstruation occurs.

Adnexitis will also show an elevated temperature for several days in a row, then returning to normal values. The same result indicates the inability of the egg to fertilize.

Jumps in indicators when measuring BT will indicate the death of the egg due to stress, the use of pharmaceutical drugs or other factors.

If menstruation does not occur on time and BBT is reduced, then most likely it is ovarian dysfunction, to confirm which you will need to visit a gynecologist and undergo additional examinations.

Elevated temperatures in the proliferative phase mean a lack of estrogens, and low progesterone and corpus luteum.

Indicators for a frozen pregnancy

Unfortunately, pregnancy does not always end in childbirth, miscarriages, premature births and missed abortions occur. This happens in 15% of women, which is difficult to determine. It can occur at any stage of pregnancy, but most often during the initial period, up to 13 weeks.

And it is the measurement of basal temperature (low rates) that helps to see this process in a timely manner, when it can still be prevented. The causes of this condition may be infectious diseases and endocrine system, disruptions in hormonal levels, alcohol and nicotine abuse, as well as age after 30 years.

It happens that the basal temperature is kept at 37 degrees, and the development of a missed pregnancy has begun. This can be judged then by the sharp disappearance of all symptoms - suddenly the toxicosis disappeared, the chest does not hurt, you began to look at any food normally without any special changes. In this case, the lower abdomen may begin to hurt and blood may appear in the secretions. All this should force you to immediately consult a doctor.

If nothing can be done and the pregnancy has stopped, then the only treatment is an abortion, but if the period is long, then curettage. Before the next fertilization after such procedures, it is necessary to wait six months, which will allow you to fully recover and conceive safely.

Regular and correct measurement of basal temperature will not only help you get pregnant, but also identify various abnormalities in your body. Health to you and your loved ones!

Control of basal body temperature helps a woman to detect changes in the body in a timely manner. These data can show minor changes which cannot be seen externally. Many people are interested in knowing what basal temperature should be during the day and in the evening.

Under the basal temperature is understood the smallest mark recorded by the thermometer when measured after at least three to four hours of rest. Sleep ideal. It is conditionally called basal, since it is impossible to fix a true basal temperature at home. But, at the same time, the method is good enough to fix the temperature, which is determined not by the activity of a person, but by the basic (basal) function of the internal organs.

For example, to monitor menstrual cycle and calculating the day of ovulation and the best period for conception.

Changes

Body temperature changes throughout the day depending on the activity of the person. Both physical and psycho-emotional. Therefore, the temperature measured during the day or in the evening cannot be considered basal. It will depend on external factors.

So, for example, as a result of daily activities, the evening temperature in the anus can normally reach values of 37.5 - 37.7ºС in any phase of the menstrual cycle.

Influence on body temperature and activities such as eating (digestion), sexual intercourse, training, experienced stress or joy, taking medications, certain vitamins and dietary supplements. Of course, taking hormonal drugs will distort the values of basal temperature.

Read more about the rules for measuring basal temperature and interpreting values at the link:

Measurement of basal temperature is very popular among women. This method does not require any financial investments and, if you follow all the measurement rules, the most accurate indicators of the processes in the female body are achieved. With this method, many women have been able to successfully.

Others have used this method to monitor the intrauterine development of the fetus in the first months of life.

Basal temperature is the “internal” temperature of the body at rest for at least three hours of full sleep. After a long rest, the temperature readings will not be affected by additional external factors.

In the distant 50s, Professor Marshall developed a recognition technique using fluctuations in a woman's hormonal background during. As is known, female body during the period of the cycle, there are two stages: where it dominates and where the main one is progesterone.

The doctor, analyzing the graph, can see the following:

The process of maturation of the egg and the period when this occurs;
or its absence;
Can determine the functioning of the endocrine system;
Notice abnormalities inside the uterus (endometritis);
See some gynecological problems;
Evaluate work at different phases of the monthly cycle;
The frequency of the cycle and determine the day;
In cases of delay, determine whether there is or not.
Monitor intrauterine development of the fetus initial stage pregnancy).

Having made the decision to take measurements of rectal temperature, you should not treat this method “slipshod”.

How to measure temperature correctly

There are unspoken ones. They entail accurate indicators of the processes in the reproductive system. Any violation of one or more points from the rules will give a blurry indicator and an inaccurate result.

Any thermometer will do. Doctors prefer mercury thermometers as a more accurate indicator of the result. It's best to use a thermometer you trust.

Basal temperature measurement principles:

It is necessary to measure the temperature every day, no exception.
You can start using this method on any day, but it is better to start from the first day of the monthly cycle.
Measurements are taken in one of three places: in the mouth, in the vagina or in the anus. Having chosen one of the diagnostic methods, it cannot be changed throughout the entire time.

BT measurements in anus considered to be the most accurate.

The method in the mouth suggests that it is worth putting a thermometer under the tongue and closing the mouth. Measurement time - 5 minutes.

A thermometer is inserted into the vagina and anus a few centimeters in a narrow part, hold for 3-5 minutes.

How to measure basal temperature correctly:

You need to choose one time for diagnosis, because it cannot be changed even on weekends. It is recommended to give preference to the wake-up time on weekdays. Each hour of the day has its own biological indicator, therefore, waking up an hour later in the day, the basal temperature will be higher each time.
It is worth measuring, as it were, without waking up to the end and without getting out of bed. It is better if a woman makes a minimum number of movements. In such cases, it is advised to knock down a mercury thermometer in the evening and put it at a short distance from you, so that it is convenient to reach it.
The female body should be at rest (sleep) for at least 3 hours, preferably more. This means that even going to the toilet is not allowed. If this situation occurs, measure your basal temperature before visiting the ladies' room. Simply, during a long rest of the body, the basal temperature will show the heating of the body only due to the work of the internal organs. And while awake, work is added muscle mass female body, and this is additional warmth.
After removing the thermometer, these degrees must be immediately remembered and plotted on the graph.

A few additional nuances:

While maintaining the schedule, it should be borne in mind that with some evening actions a girl can “catch up” with the temperature. For example, drunk, classes or a strong stressful situation, insomnia, a business trip, and more can cause an increase in the indicator. When such a situation could not be avoided, it is worth noting it on the chart.
If a lady has an elevated body temperature, the basal indicator is considered uninformative.
Use this technique and accepting is stupid. The indicator for this technique directly depends on the level of hormones in the body.

And about the graphics:

The graph has two axes: temperature and day of the month.
Plus the "notes" column. All factors that can affect the degree indicator are entered here.

It would be much more convenient to use this method at other times of the day. For example, in the afternoon or in the evening, when a girl is ready to devote time to her beloved. But that's not possible, unfortunately.

As mentioned earlier, during the period of wakefulness, all mechanisms of body movement are launched, as a result, the heat of heating increases and will be higher than the desired indicator.

Of course, if a lady is nocturnal and her sleep falls during the daytime, you can use this method in the evening or after prolonged uninterrupted sleep for at least 3 hours.

The temperature difference between sleep and wakefulness can differ by one degree or more. And from a medical point of view, this is a great indicator.

This is not suitable for determining gynecological problems, for planning a pregnancy, or, conversely, for determining safe days. It is the time after sleep and rest that has an accurate indicator.

Basal body temperature during ovulation

Usually, a day before the "explosion" of the follicle, from where the mature egg comes out (), the basal temperature drops slightly, on average by 0.2-0.3 degrees. At the time of ovulation, the temperature rises sharply and lasts for a certain time (until the next menstruation begins). Its indicator varies 36.9-37.4 degrees.

The fertile period is the time when the graph curve falls plus two days to it. It is during these hours that a woman has. All that later (after) has nothing to do with conception.

BT in early pregnancy

During conception, the rectal temperature during the second phase of the monthly cycle remains high - more than 37 degrees. She continues to hold on to time.

Using this method, you can monitor the course of pregnancy in. In the early stages, you can identify the pathological condition of the embryo or see, thereby preventing the development of the problem.

There is an opinion that a drop in basal temperature indicates a fading of the fetus either, but one-day diagnosis should not be trusted. But if this continues for some period of time, it is better to inform your gynecologist about this.

It is also worth discussing with him an increased rectal temperature (above 37.8 degrees), if any. This may be a signal of a pregnant woman in the body.

During pregnancy, the rules for measuring basal temperature remain unchanged.

Basal temperature: the pros and cons of the method

Measuring basal temperature for many women can be very difficult. Even one day skipping the morning procedure, you can distort the entire schedule and all the efforts of the previous days are in vain.

It is also important that the BT indicator can change if a woman falls ill, drinks alcohol the night before.

But still, measuring basal temperature is much easier than taking a lot of tests to identify the cause. Or, for example, it is possible through the BT schedule. Ultrasound monitoring may be financially unaffordable.

There are both supporters of this method and opponents in the world.

If we consider this method from all sides, we can highlight the main advantages:

The first, of course, is availability and low cost, and to be more precise, no money will be needed to measure basal temperature. Every family has a thermometer, so even low-income families can afford this technique.
The procedure does not need to spend a lot of time.
The method is so simple that no special skills are needed.
The procedure will not affect the health of the woman in any way.
To diagnose basal temperature, the presence of a specialist is not necessary.
Ladies who dreamed about are "saved" by this method of determining day X for successful fertilization.

B there were no cons:

Self control. Every day, at the same hour, no matter what, a woman must adhere to the same measurement time.
Every day you need to write down your readings so as not to confuse the value in the future. Daily degrees practically do not differ from each other, so you can just get confused in the numbers.
In the period of some diseases, it is not allowed to use this technique. For example, during an exacerbation of hemorrhoids.
During the use of this method, it is recommended to avoid situations that affect the temperature increase. For example, alcohol should be avoided.
It happens that adhering to all the measurement conditions, the basal temperature turns out to be uninformative.

Forming a graph of basal temperature, the female representative raises hers quite high. Also, this method is suitable for checking the hormonal state of the body, where the doctor suspects a pathology in this area.

In addition, measuring basal temperature and plotting is suitable for diagnosing.

Of course, this is not a panacea for all ills, and whether or not to use this technique is up to each woman to decide individually, but you should not forget about such a simple and reliable method.

The accuracy of rectal temperature readings depends on many factors. The time of day is perhaps the most important of them. In the evening, the basal temperature will not be informative. The same can be said about daytime and even late morning.

Why is it necessary to measure temperature indicators rectally in the morning? And is it possible to do this at a different time of the day, but with an amendment?

The essence of the technique

Under the basal temperature understand the indicators of heating of the internal organs in a state of complete rest. Measurements are carried out rectally, that is, in the anus.

All internal changes in temperature are influenced by hormonal levels. It is the correct ratio of the right amount of hormones that ensures the natural functioning reproductive system at a woman. Using this technique, the moment before, during and after ovulation is traced. With the onset of each period, the hormonal background changes. These changes are recorded by the basal temperature.

The study is painless, does not require financial costs. To fix the results, you only need a thermometer, a sheet of paper and a pen. Use both a conventional mercury thermometer and an electronic thermometer. In the case of regular correct research, it is possible to track the presence of inflammatory processes, as well as the best or “safe” days for conception.

Click on the table and save it to your computer (and fill it in right there) or print it.

Day and evening

When and to track true values?

Studies are carried out in the morning, as soon as there was an awakening from sleep. Lying in bed, without making any unnecessary movements, a woman should take a thermometer prepared in advance (just don’t put a mercury thermometer under the pillow, it’s dangerous!), And insert it into the anus. Remove the thermometer after 7-10 minutes. The measurement is considered complete.

Is it possible to measure rectal indicators at other times of the day?

The basal temperature in the evening will not be informative, since many factors affect the body during the day. natural physical exercise, food intake, nervous excitement - this is not a complete list of reasons why temperature readings will be distorted.

Is it possible to measure rectal temperature during the day? The answer will also be unambiguously negative. Basal temperature during the day is just as distorted as in the evening. Any physical movement and mental unrest will increase or decrease performance.

Some girls measure BBT during the day or in the evening “with correction”, that is, they subtract a few tenths of a degree and put the figure on the chart. But this is the wrong way. One day you will be calm. For example, you will stay at home and will take your time doing routine things. Then BT will rise slightly compared to the state of rest. Another day you'll be running around the city, settling numerous problems, nervous and destroying strong coffee in between. And then the temperature rises. But not under the influence of hormones (and it is precisely their quantity that we want to find out), but because of stress and physical effort.

What factors affect BT

However, morning measurements also do not always guarantee a 100% correct result.

Consider the factors that have a direct impact on temperature indicators.

Physical activity. The most insignificant movements cause the splitting of special energy molecules in the muscles, which provoke an increase in temperature in all organs and tissues.
The process of eating. As food enters the esophagus, intestinal motility changes. It affects the overall blood flow and the temperature background in the intestine. These changes are especially relevant after eating fatty, spicy and salty foods.
Alcohol. In the process of splitting the molecules of an alcoholic drink, changes occur in the filling of blood vessels. The blood flow fills up faster, and the temperature of the body and internal organs increase.
Stress and nervous tension. Any processes in our body are controlled by the brain. Temperature regulators are very close to the centers that control emotional state person. Therefore, their relationship is obvious.

In addition, any changes in the normal rhythm of a woman's life, reception medicines, moving and even sexual intercourse can cause a distortion of basal temperature.

What if she's pregnant?

Often this technique is used for early diagnosis of the onset of conception. Women who use it know that normal rectal temperature should decrease after ovulation. If she long time has increased rates, this may indicate the onset of pregnancy.

Read the detailed article, what should be. Here we present only the main facts.

No one can give exact numbers, since the indicators depend on the individual characteristics of the woman's body. However, during early pregnancy before the delay, the graph will definitely show increased values (from 37 to 38 degrees). “Guilty” of this is progesterone, which continues to be actively produced for the full development of the fetus.

If pregnancy is confirmed with a special test, doctors recommend continuing the measurements. This must be done in order to diagnose possible violations in the development of the fetus as soon as possible.

So, a sharp and prolonged decrease in the numbers on the graph most often indicates a cessation of fetal development: a woman is threatened with a miscarriage or a miscarriage. Too high rates (over 38 degrees) are a sign of inflammation processes.

In both cases, you need to consult a gynecologist who, using ultrasound diagnostics and laboratory tests, will identify the cause of the failure. After all, according to the basal indicators, it is impossible to make a diagnosis. These figures only help to suspect the presence of any deviations. In addition, minor deviations from the norm within 1-2 days are not a signal of any violations. Perhaps this situation has developed as a result of errors in the performance of the study or because of general well-being.

During the study during pregnancy, you must adhere to the same recommendations as before it. Measurements should be taken only in the morning, as the basal temperature in the evening during early pregnancy will also be distorted.

Is it worth measuring BT?

Summing up, we note that measurements of basal temperature indicators are not a guarantor of 100% informative numbers on the chart. Too many factors affect them.

Modern obstetrician-gynecologists tend to more accurate methods - ultrasound and hormone tests. Many doctors generally do not advise their patients to schedule BT. Or they use this technique as an auxiliary one, because it can be useful to complete the picture. If you measure the temperature in the morning, following all the rules and recommendations, you can significantly facilitate the diagnosis of important events for a woman's life and serious diseases.

But on the issue of measurement regimen, doctors are unanimous. It is pointless to conduct studies of basal temperature during the day or in the evening, since there will definitely not be the correct numbers in the chart.