When does the 3rd trimester of pregnancy start? What week of pregnancy does the third trimester start?

2024 Author: Priscilla Miln | [email protected]. Last modified: 2023-12-16 00:21

A lot of people are interested in what week of pregnancy the third trimester begins. This is important to know, especially when you consider that this period in itself is very important for the expectant mother. The third trimester is the final line, which brings a lot of surprises, troubles, and sometimes problems. The baby is about to arrive! Not much left.

From what week does the 3rd trimester start? What did he prepare for the future mother? What should she prepare for? You can find out more about all this below. After all, pregnancy management is a very important process, especially at its very end and beginning.

Uncertainty

In general, whoever has ever encountered an "interesting situation" is aware of some perplexities of future young mothers who have just registered and are trying to determine which week they are. The thing is that there are two options for the development of events. Which ones?

Wondering what week of pregnancy the third trimester begins? Then keep in mind: your data and doctor's testimony will be different. Approximately 2 weeks. After all, there is a so-called obstetric period and embryonic. They influence the readings. Which means they won't match. It can be difficult to answer from which week of pregnancy the 3rd trimester begins. But maybe.

Obstetrical

Most often, in order not to confuse and scare a woman, it is customary to take into account both options. The first step is to pay attention to the obstetric period. It is extremely important for setting the EDD (approximate date when you will give birth). Of course, it will take place in the third trimester.

Obstetric rate depends on your period. It is counted from the beginning of the last critical days. If you believe this indicator, then you can answer the question of which week the third trimester of pregnancy starts from, on your own, without the testimony and conclusions of a doctor. What will be the answer? The third trimester is, as you might guess, 27 weeks. It is from this period that you enter the finish line with such a long and important process.

Embryonic

But not everything is as simple as it seems at first glance. It has already been said - there are two options for calculating the gestational age. In the first case, obstetric, you can do without the help of doctors and determine everything yourself. But in the second, embryonic, only an examination by a gynecologist, as well as an ultrasound report, will give youresult. And accurate.

So, for example, be prepared for the discrepancy between obstetric and fetal gestational age. This is normal, it never happens that they coincide. In practice, the second indicator exceeds the first by about 2 weeks. After all, as a rule, conception occurs on the day of ovulation (this is where the development of the embryo begins). It happens closer to the middle of the cycle, on average after 14 days.

From what week of pregnancy does the 3rd trimester begin in this case? Only your doctor, who observes the difference between the obstetric and the embryonic period, will answer you. But if we take the generally accepted indicators at 2 weeks, then at 25 (relative to the first day of the last menstruation) the final stage of your baby's development already begins. But the immediate beginning of the 3rd trimester for the mother remains the same - from the 27th week.

Attention, childbirth

So we have decided when the pregnancy can be called almost completed. Only now it is worth understanding the features of this period of time. There are a lot of them, much more than at the very beginning of the path of bearing the fetus.

Third trimester of pregnancy from what week begins? As it has already turned out: with an obstetric period - from 27 weeks from the day of the last menstruation, and with an embryonic period - from about 25. There is nothing difficult about this. Orientation will be more on the first indicator, both women and doctors are equal to it.

The fact is that already at the beginning of the third trimester you may start giving birth!Approximately 28 weeks pregnant. This phenomenon is called spontaneous miscarriage or a similar birth process, premature. If the child develops normally, nothing bothers you, you should not panic much. The baby will be born in a natural way, just until a certain point he will stay in intensive care, connected to special devices that will help the newborn, who has not yet fully formed, to come out. Pretty rare, but it happens. Your doctor will usually warn you about the risk of preterm birth.

Racing

We have already found out from which week the third trimester of pregnancy begins. Moreover, already at the beginning of this period, one can encounter such a phenomenon as childbirth. But, as already noted, this does not happen so often. Therefore, it is worth considering a typical situation in which the expectant mother is equal to the EDD.

The third trimester of pregnancy becomes a huge headache for women. Why? Already from 27-28 weeks and up to 30 inclusive (and this is about a month), you will be driven to the doctors. More examinations and tests! Donated urine alone is not enough.

The third trimester is remembered by many as running around the doctors. First, you need to donate blood for many hormones. Not too critical, but sometimes unpleasant. Secondly, gynecological smears according to indications. Thirdly, the passage of narrow specialists. This moment is able to unsettle even the calmest pregnant woman. Very often narrow specialists(for example, a therapist) begin to raise unnecessary panic around a woman in a position, prescribe many additional tests and studies, which is why the future woman in labor is not able to sign an exchange card in the maternity hospital and conclude an agreement. But it is inevitable, you have to be patient. When the tests are passed, and the doctors are passed, you will finally be given recommendations for childbirth.

By month

We have already found out from which week of pregnancy the third trimester begins. Or from 27, or from 25. It all depends on what period you had in mind - obstetric or embryonic. But now, another question that some people care about quite seriously: "How many months is this?"

It is easy to guess (and count too) that the third trimester begins at 7 months of pregnancy. And it lasts for 9 inclusive. Therefore, many consider the periods of the "interesting situation" not in weeks, but in months. This is much easier than specifying obstetric and fetal periods.

From now on, we know when the third trimester of pregnancy begins. Moreover, now it is clear what you can morally set yourself up and prepare for, especially if you are not too fond of taking tests and going to doctors.

Final stage

What else can be said about the features that await the expectant mother in this period? For example, one should not forget that births that are normal for the development of the fetus, but not entirely suitable for the mother and doctors, are not excluded. Too premature, butresuscitation is no longer required.

The thing is that it is important to know when the third trimester of pregnancy begins, because of the likelihood of childbirth during this period. The question is, when will they start? Completely premature and dangerous, equivalent to a miscarriage, occur at 28 weeks, but just premature babies are born at 36. This is normal.

However, it is generally accepted by doctors that the body is fully ready for childbearing by the 38th obstetric week. And such births are normal. As practice shows, from 38 to 40 weeks they will definitely take place. Otherwise, you will have to wait for the expiration of the full embryonic period. It's not the most common occurrence, but it does happen. Now it’s clear from which week of pregnancy the third trimester begins. Get ready for this period! Start packing bags for the hospital!