In the third week of pregnancy, Morula turns into a blastocyst - an cavity is formed inside the cell ball in which the embryo develops. At the third week of pregnancy, the attachment of blastocysts towards the wall of the uterus occurs. If before that, the egg cell, which connected with the spermatozoa, was fluent in phallopy tubes, now she fell into the uterus, and she needs to be gaining. Sometimes the embryo can swim in the uterus a few more days.
At 3 week of pregnancy, the fruit has not yet been formed, but only an embryo, which is not at all like a person at all. It is a ball of about 250 cells with a diameter of about 0.2 mm. The embryo is in the yolk bag. Before attaching to the end of the uterus, the embryo is powered by the so-called yellow, or luteane body - the temporal endocrine gland, which is formed every time ovulation occurs.
Yellow body exists up to 12-16 weeks of pregnancy. It produces a hormone progesterone, overwhelming menstruation. The yellow body supports the life of the embryo while it is still "in free swimming". After attachment, it will fully depend on the mother's body.
While the embryo was not implanted, he still autonomy from the body of the mother. Therefore, what is happening in the body of the woman does not have so much effect on the embryo. It's time to adjust your food and get rid of bad habits if they are.
A part of the embryo cells, the one that was obtained from the father, alien to the mother's body, so the embryo produces a protein, overwhelming immunity. It is necessary that the uterus does not reflect it. As a consequence, 3 weeks of pregnancy is characterized by a decrease in immunity, so there is a state similar to a cold: a runny nose, sore throat, sneezing, nasal congestion. These symptoms of changes in health in the third week are considered one of the likely signs of pregnancy.
In the beginning of 3 weeks of pregnancy, the blisterocyst grows with a villus, which she is attached to the uterine shell. After rustling in the endometrium, the villi is in contact with the blood of the mother, through them the power is carried out. Vorki will develop throughout the 3 week. After fixing the embryo, another most important process begins for which the yellow body is also answered - the formation of the placenta. At this time, half a child is already laid at the cellular level, although it does not appear externally.
3 week of pregnancy can give itself felt as a change in the well-being in a woman. This in most cases is happening before the menstruation delay. Some women say that they already feel that pregnant, although there are no objective signs yet.
The home test for pregnancy can already show two stripes at this time. The test determines the presence and level of hormone hgch - human chorionic gonadotropin. This hormone is produced by an external leaflet of the embryo. Its level in the urine at 3 week is still small, but the sensitivity of pharmacy tests may be enough to determine the occurrence of pregnancy. At the 4th week of pregnancy, the level of this hCG in the blood is much higher, so blood test on hCG will confirm the fact of pregnancy more accurately. 3 week of pregnancy can have the first signs of pregnancy, which can not be called accurate:
All this suggests that a serious restructuring began in the body of a woman, during which he is prepared for having a child. However, such symptoms in a woman can be a sign of approaching menstruation, and self-sustaining, if she really wants or on the contrary, it is afraid to get pregnant.
One of the most important periods after conception is the third obstetric week of pregnancy. It is at this time that the fully matched egg is found in a masterpiece with one of the millions of spermatozoa, further fertilization and promotion of the zygota in the uterus. On the third week it becomes clear whether the fertilized egg was entrenched in the body of the uterus or the body gave failure. After fixing in the body, a woman begins to produce a certain hormone called HCG, under the influence of this hormone becomes a positive pregnancy test. That is, by the end of the third week of pregnancy or at the beginning of the fourth, you can already see the test of the test to see two cherished stripes. This is where the time comes to question: but we hope that pregnancy is welcome and you know what to do next.
Sperm, moving towards the royaltic pipes, meets in its path a lot of obstacles and therefore the ultimate goal is suitable for the strongest and hardy. One of them is embedded under the shell of the waiting for its egg cell and comes in fertilization, as a result of which the future child receives 23 chromosomes from each of their parents. What is developing at the 3rd week of pregnancy? It is at this moment that the floor of your baby is determined, the color of the iris and hair and hair color, genetic features are transmitted. By the way, you can try to pre-determine.
After entering the uterus, the most important process of the implantation of the zygota to the walls of the body begins, if everything goes successfully, we can say that the pregnancy has successfully come. Its preservation in the future will largely depend on the work of the body of a woman.
After implantation, the zygota uterine gets another name - blastocyst. This blastocyst is in continuous development. In the third week, the cavity is formed inside it, in which the embryonic disk is laid, at one end of its end, the head of the embryo will be formed, and on another tail.
Cells blastocysts are continuously divided and form blood vessels inside the walls of the uterus, of which the placenta will be formed in the future. Throughout the period of pregnancy, the development of the baby will depend on the placenta. Through the placenta to it will flow nutrient components and oxygen, slags will be displayed through it. The final formation of the placenta occurs approximately to.
Before implantation of the zygotes in the body of the uterus for its food and life, the yellow body of the ovary is responsible and therefore the harmful substances incoming, in the form of alcohol, harmful elements of tobacco and other adverse components do not have a negative influence on the germ, but as soon as The zygote will consolidate, the body of the woman begins to be responsible for it. That is, the future child gets useful and harmful substances falling from the outside or formed inside the body of the mother.
By the end of the third week of pregnancy, the mother begins to receive signals that there is another life in it. And it causes a lot of responses, some of which ensures the safety of the child, and the other part of the opposite perceives it as an alien organism. It is with this confusion that the sensations arise from a woman by the end of the third week of pregnancy are connected and later.
The zigode is then cleaved by 100 cells. This process lasts a couple of days after conception. Some cells in the future forming the embryo, other placenta, but for now it is only cells that make up one fifth of the size of the future fetus.
If you are pregnant at 3 week, you are 1 month pregnancy. It remains only 8 months! Have questions? Here are some more information about how weeks, months and trimesters are disintegrated during pregnancy.
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At 38, the fruit weighs about 3 kg, and the growth reached 50 cm. The fruit can already be tightly grabged with his hands, in which you can soon make sure, holding it for the handle for the first time. To the thirty-eighth week of pregnancy, organs and systems are ready to live outside. To the outcome of the Z8 week of jumps in development no longer be noted, the improvement of all functions occurs smoothly and continues, and after the advent of the baby.
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September 14, 2020 Group of Companies Mother and Child replied: The main sign of the occurrence of pregnancy is the latency of menstruation. However, it may also be a consequence of a hormonal violation. Therefore, in the case of a long delay, we recommend contacting the doctor a gynecologist-endocrinologist.
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