Fourth week of pregnancy

Future child.

Height – 0.36 mm in width and 1 mm in length, weight – is not defined.

By the end of the week, your future child is an elongated embryo about 0.36×1.0 mm in size. This means that if you compare it with the letter “o” in this text, then it will be less than half of it.

During this period, the final implantation of the fetal egg in the mucous membrane of the uterus occurs. This process began at the end of last week, and now a small embryo begins to form a rudiment of the placenta, which will transfer nutrients from the mother’s body to it.

An amniotic fluid is also formed. the environment in which the fetus is formed. It is located in the placenta between the embryo and the walls of the bladder. Now this liquid is still very small – just a few drops. But by the 12th week it will be about 100 ml, and by the end of pregnancy – to a liter.

In the body, the hormone hCG (human chorionic gonadotropin) begins to be released. All pregnancy tests are based on the detection of elevated levels of this hormone in the urine or blood of the mother. The fetal egg turns into an embryo. He develops three groups of cells.

Ectoderm will form the basis for the formation of the baby’s brain, the mizoderm forms its blood, skeleton, muscles, genitourinary system, and the endoderm will produce glands, liver and gastrointestinal tract.

Modern instruments allow us to consider the tiny head of a future baby – it is almost formed and resembles a droplet. There are already cells that will form the future heart of the child and the circulatory system.

You can also see the yellow body – this temporary gland nourishes your baby until the placenta is formed. It is interesting that the role of the corpus luteum is still not completely clear to physicians. It is generally believed that it produces progesterone, a hormone necessary for pregnancy, and also supports the existence of a baby before placenta formation at 8-12 weeks.

However, there are cases when the yellow body was removed at the earliest stages of pregnancy due to surgery on the cyst. However, these pregnancies ended normally.

Future Mom.

Whether you are pregnant or not now can only show a blood test. Analysis of the test strips that are sold in the pharmacy, most likely will not produce any result – in the urine the content of HCG is still too little. But if you want, you can conduct such tests daily.

Then you will be able to observe how the pale, barely discernible second strip begins to appear at first, as then it will become brighter and brighter – every day the amount of the hCG hormone doubles.

You can feel mood swings, unexplained irritability, fatigue. Some women even show first signs of toxicosis – this is the beginning of the work of the yellow body. The main danger of this period is the wrong implantation of the embryo.

If a fetal egg does not exit into the uterus, it is anchored in the fallopian tube or ovary. This pregnancy is called ectopic and it is not viable. However, it can lead to rupture of the fallopian tube and bleeding, which is extremely dangerous for a woman’s life.

The cause may be congenital defects of the fallopian tubes, previously transmitted infections (both venereal and related to intrauterine contraceptives) that left scars on them, surgical operations on tubes or nearby organs. Because of scarring or proliferation of endometrial tissue, the fetus can not enter the uterus and is stuck in the tube. But part of the ectopic pregnancies develops at all for no apparent reason.

Statistics show that for 100 pregnancies, only 1 ectopic occurs. If the woman’s previous pregnancy was ectopic, the risk of the next ectopic pregnancy increases to 10%. Signs of her need to know every woman.

1) Pain that is similar to an inflammation of appendicitis or a very painful period.If there is a rupture of the fallopian tube, the pain suddenly becomes very sharp and strong.

2) bleeding, which is preceded by pain. However, bleeding can occur in normal pregnancy, and 75% of women who have had bleeding give birth to healthy children. However, if bleeding is accompanied by severe pain – this is in any case an urgent reason to see a doctor.

3) hCG analysis. In normal pregnancy, hCG in the blood doubles every 24 hours. With ectopic this dynamics is disrupted.

4) ultrasound data. Since the fifth week the embryo is already visible in the uterine cavity. In the event that the hCG analysis is positive, and ultrasound can not see the embryo, a more thorough check should be made.

5) severe pain during gynecological examination when affecting the cervix.

6) nausea, vomiting and dizziness, which is accompanied by sharp pains and bleeding, especially if the blood has a bright red color.

The sooner an ectopic pregnancy is identified, the greater the chances of maintaining the fallopian tube and the possibility of becoming pregnant afterwards.

3 weeks – 4 weeks – 5 weeks

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