From what week does the trimester of pregnancy begin? Features of the period, development of the fetus

Very often pregnant women are deceived and can not figure out what week begins the trimester. Sometimes doubts concern its duration and current events.

How to determine the 3rd trimester of pregnancy?

Very often, future mothers are puzzled, because they do not know from what week the trimester of pregnancy begins. There are several variations, according to which this period falls on different periods.

But at the heart of the division of pregnancy into periodsthere is a single principle. In the first trimester, the fetus begins to form important organs and systems. In the second, he improves and grows. 6 months of pregnancy completes this trimester, and the woman begins to feel that soon will become a mother. The first movements and tremors of the child occur in the third trimester. During this period, the baby is mostly gaining fat mass, the systems of his body are endowed with important qualities that can ensure viability in the first weeks after birth.

Some classifications claim that the beginning of the third trimester is compared with the 24th week. Others start counting this period from the 26th or even 28th week.

Now doctors very rarely calculate trimester, preferring to use only a week for counting.

How long is the 3rd trimester?

The beginning of the labor of every woman is completely dependent on her body. Some overpay pregnancy, while others give birth before the term. And all this is usually considered a norm.

Do not forget that doctors can onlyapproximately determine the term of conception. But anyway, from what week begins the trimester, still remains an open question. It is important that in the norm this period lasts not less than 12 and not more than 16 weeks.

The final stage of pregnancy should not endbefore the due date, therefore it is important to follow the recommendations of doctors, often to be outdoors, to eat in a balanced manner and to exclude physical and emotional stress.

Regular consultations with the supervising physician will help to quickly get rid of the health problems that have arisen.

What happens in the 3rd trimester?

You already know when the trimester startspregnancy, so it's time to talk about what happens in this period with a future mother. Preceding the final stage of 6 months of pregnancy forms a stable emotional state of a woman. As a rule, appetite preferences remain stable, the probability of developing a depressed state decreases, and fatigue goes away.

An important stage of the last trimester is a maternity leave. By this time, it becomes more difficult for a woman to do the usual work, so she should rest more.

After the third trimester, future mothersbegin to actively add kilograms. During this period, you need to carefully monitor their own meals, because excess fat postponed as a woman and a baby.

The large weight of a child can significantly complicate childbirth, and sometimes cause a caesarean section. Also, overweight often causes the expansion of veins and hypertension.

Third trimester: the processes taking place in the female body

At the beginning of this period, the distance from the bottom of the uterus toThe navel is 2-3 cm. Gradually, the uterus begins to press the internal organs of the female body and move them upwards. As a consequence, the movement of the diaphragm is disturbed, there is a feeling of discomfort under the ribs, shortness of breath and shortness of breath when walking.

At this time, the woman weekly recruited for 400 g. Toward the end of the 7th month, future mothers encounter for the first time training fights, which most often proceed painlessly. A large belly can cause insomnia, so it's best to immediately get used to sleeping on your side.

The symptoms that a pregnant woman can detect during this period:

· Enhanced allocation;

· Problems of the digestive system;

· Sprain in the lower abdomen, pain syndrome;

· Allocation of colostrum from the breast;

· Vomiting and nausea;

· Training bouts;

Cramps in the calf area;

· Active behavior of the fetus;

· Awkward gestures.

Nutrition in the 3rd trimester of pregnancy

At this time, it is more important than everto eat. Experts say that a balanced meal at times reduces the likelihood of developing gestosis. Each future mother is able to follow the rules that will help her and the baby.

In the diet you need to include lean fish and meat, but these foods should not be eaten in the evening. Just forget about chocolate, nuts, citrus, spicy, sour, fried dishes, conservation.

But nutrition in the 3rd trimester should not belimited. It is not necessary to lean on sweet and flour dishes, you should give preference to vegetables and cereals. Fiber, which is contained in these categories of products, will help to normalize digestion and will give a sense of satiety for a long time.

Fetal development rates during this period

During the course of pregnancy, the expectant motherpasses a lot of procedures that allow you to monitor the condition of the fetus and the level of its development, including ultrasound. The 3rd trimester is final, and this study is very important. Ultrasound diagnosis is a way to detect severe disorders of fetal development, it is performed in conjunction with the delivery of hormone tests.

The objectives of the third planned screening

To study the position of the fetus in the womb helps ultrasound. The 3 trimester is a difficult period in pregnancy, so it is so important to insure yourself and determine the birth control strategy that will be used in advance.

Ultrasound examination of the fetus allowsto clarify its anatomical indicators: approximate weight, size, correspondence to the current stage of pregnancy. It is important not only to know from which week the trimester starts, but also to detect vices in time, infections not previously detected.

Screening in the last trimester providesdata on changes in the cerebral cortex. In addition, this procedure is used to measure the volume of amniotic fluid and to avoid possible complications in the process of childbirth.

It is very important to pass examinations on time,appointed by the treating doctor. Systematicity is not a whim of a doctor, but a vital necessity for both a pregnant woman and a baby. Stressful situations and a poor state of the environment are unfavorable external conditions that adversely affect the health of expectant mothers and their children.

The deviation of water volumes cansignificant changes in the anatomy of the developing child. Ultrasound examination is also a chance to detect complications that can interfere with natural birth. We are talking about the development of neoplasms, incompetence of the cervix.

A pregnant woman should first of all think about the child, so it is so important to eat right, do not worry and undergo the procedures prescribed by the doctor.