Interesting! On the period of 3 weeks of pregnancy, the size of the fruit is meager - this is 0.3 grams and 0.2 millimeters. But by the 4th week of pregnancy, this tiny will increase to 1 mm in length with a weight of 1 gram.
In fact, for your body, the fruit is a foreign body that does not turn back only thanks to the hormonal restructuring.
Such hyoccia is needed at the initial stage of pregnancy, since at this moment your body is rebuilt and he needs enormous forces.
That is why, literally in the first week, after fertilization, you can notice the grown stomach at 3 week of pregnancy, that's just the reason - not a stubborn embryo, but gases causing a bloating (article on the topic: >>> ).
As a rule, toxicosis at 3 week of pregnancy is not yet manifested, but you can feel disgusting from food precisely because of its pronounced fragrance.
Nevertheless, it is necessary to pay attention to the correct nutrition from the very first week of pregnancy. They will determine the health of the future child.
At 3 week of pregnancy, this is possible, but if you periodically swell your chest before monthly or during ovulation, you can simply not pay attention to this change. The chest at 3 week of pregnancy can not change, given a short time.
These symptoms can manifest themselves both in the complex and completely absent, given the early term of pregnancy.
For women who ventured an extracorporeal fertilization, the first 3 weeks after the transfer of embryos become the hardest time, when the joy of possible motherhood is mixed with fear of losing a growing new life.
At this time, the most important restructuring in the body of the mother, which cause further normal course of pregnancy, and future system of child bodies are laid.
The embryo in the third week is already firmly implanted into the wall of the uterus, which necessitates the launch of mechanisms of hormonal changes in the parent body. In the ovary at the site of the exit of the egg, a yellow body is formed - the main source of progesterone of pregnant women in the first 12 weeks of the baby tool. Under the action of progesterone, the change in all the systems of the body of the woman begins:
Also, estrogen is also produced in large quantities, which helps improve the elasticity of muscle fibers, change in blood supply and the growth of the uterus.
with an extracorporeal fertilization, 3 weeks after the transfer of embryos, the woman most often continues to receive hormonal means that increase the amount of estrogen and progesterone and reduces the likelihood of abortion.
3 weeks after the vitro fertilization, the future mother may encounter the main signs of pregnancy accompanying changes in the body. Most often, women note:
In the third week of pregnancy, after Eco, the embryo is the formation of a nervous tube. The gasastration phase is completed, and the embryo now has the form of neurules. At the site of the future spinal column, a gradually deepening bending is formed. Washed, the edges of the deepening form a nervous tube - the predecessor of the child's head and spinal cord. The formation of the heart is also forming.
In the same period, the growth of the placenta begins - a unique body providing protection and nutrition of the fetus. Amnion and Chorion are formed from Trofoblast and Etoderm. The amniotic cavity is filled with by oily water, and the chorion begins to actively produce hCG. The size of the embryo reaches the values of 4 mm and can already be seen on the ultrasound.
3 weeks of pregnancy: what is it for time? Most inexperienced future mothers waiting for the firstborn, believe that 3 weeks of pregnancy begins a week after the monthly delay. And with amazement learn that they are almost twice as much longer! What actually happens on the third week of pregnancy and why the period of gestation is considered exactly that?
The dates of ovulation and the fusion of the eggs with spermatozoom may differ even at the same woman. When the ripening of the follicle occurs, depends on the stability of the menstrual cycle, from the work of the endocrine system and the disorders of its function. And there may be stresses, colds, even inclip and diet to affect her work. Ovulation can even belanded for those who have steadily turns with the calendar. Without the occurrence of pregnancy, such deviations are noticeable, as the next menstruation is delayed. Without the conception of a woman who do not track ovulation tests, do not know about the duty shift.
In order for the conception still takes place, men's sexes should get to the female. And this process can go as a few hours and a few days.
Because of these two reasons, the doctors consider the calculation of pregnancy by the date of sexual intercourse ineffective, especially since they could be somewhat. And the most convenient option is recognized as a period of gestation period from the first day of the last menstruation. This date is much easier to determine than the day of conception. So, by fact, by the moment of the fusion of the egg and sperm, the pregnancy is already lasting on average for 2 weeks, and the third!
So, with an average cycle at 28-30 days, it is on the third week a miracle of the birth of a new life occurs. Ripened follicle in the ovary burst, the egg is laughed in the path along the phallopyan tube towards the uterus. If unprotected sexual act is occurring, spermatozooids are also in the same pipe. For a successful conception, not one, but several. But who will become "lucky", it turns out, "chooses" an egg cell. Moreover, spermatozoa do not know how to move purposefully, they are randomly spinning on the spot, and they are delivered to the eggs of the uterus muscles. And all this - scientifically proven facts! So about the competition of "the strongest and fast headastrics" you can forget.
After the fusion of the genital phimic cells, especially long vehicles on the inner surface of the uterine tube, move the fruit egg towards the uterus, where it will soon find a suitable place for embedding in the endometrium. If the pipes are passing, and the villi is active, then at the time of fertilization of the egg is already next to the uterus. But if there are problems, the fusion of cells can occur in a more distant part of the phallopyye tube, and then the ectopic pregnancy of the pipe view is beginning to develop, the most dangerous state. According to new studies, caffeine can be the reason for the reduction of mobility of FMBry: Women who before conception consumed more than two cups of coffee per day or more than 400 mg of coffee and food caffeine, often developed a pipe pregnancy or problems with conception. Many factors are influenced by the success of conception and tooling, from the lifestyle to previously considered safe. Therefore, before planning pregnancy, it is worth consulted by a gynecologist.
3 week of pregnancy has come. What will appear in these days in the life of a woman? What joys and anxieties are associated with this time? The most important moments, information and advice are all for future mothers.
For convenience, any doctor will lead countdown from the first day of the last menstruation of a woman. The concept of obstetric period is based on this system. On another system (embryonic), the term is considered from the middle of the cycle. It is at this time that there is no ovulation and conception.
In obstetric practice, the third week is a period of fertilization. The egg cell is ripe and moves to the uterine cavity. At some point, spermatozoa penetrates it, and then the movement will continue the zygote. This new cell has a complete set of chromosomes and is capable of very rapid division.
According to the embryonic method, once the only cell is already developing violent activities and actively lives its special, sweaty life. And the future mother? If she does not know even accurately about his pregnancy, it is certainly guessed. After all, she has already been delayed for about a week.
Three weeks after conception, the pharmacy test will show the same two stripes. At the same time in the body of a woman will increase the level of hormone hCG. The appropriate blood test will confirm the pregnancy. But if we talk about the obstetric third week, the pregnancy almost occurred and is still not determined. Moreover, the woman can still come monthly.
Medical research, 70-75% of fertilized eggs are rejected by a female organism before fixing in the uterine cavity. This is due to a variety of reasons:
Sometimes the rejection occurs at all without any prerequisites. Since the embryo actually began to develop, such a phenomenon is not considered miscarriage. A woman can in principle not to know about what happened. For her, on some day, another menstruation will be coming.
By the end of the second week, finally, it becomes clear that such a long-awaited conception occurred. And the egg cell began to turn into an embryo. It is 3 weeks of pregnancy and is the beginning of a reference "interesting situation". Let's look at how the body of the future mommy changes in this time segment.
3 week of obstetric pregnancy Although it is the beginning of the birth of a new life inside the female organism, but the future mommy does not even suspect this, so quietly expects precursors of the approaching menstrual expirations.
many women are interested in what happens at 3 week of pregnancy from conception. Is it possible to learn about your position for some signs. Gynecologists in one voice argue that it is impossible to identify on this period of pregnancy. But they are right only half, since most of the future mothers still feel the changes that in their body causes an increase in the concentration of estrogen and progesterone circulating in the bloodstream.
Despite the fact that signs of implantation of the embryo for each pregnant woman are individual, there are among them those who are felt by the majority of women. Symptoms of pregnancy at 3 week are presented:
The most common signs are changes in breast glands, unpleasant sensations in the abdominal area and in the area of the belt, implantation, as well as cold symptoms, which we will talk about themselves.
At the end of the second, the beginning of the third week of pregnancy, the woman appears bloody discharge from the vagina, indicating the implantation of the egg. They provokes a violation of the integrity of the wall of the uterus, where the eggs actually fixed. In addition to light brown secretions at 3 week of pregnancy, the unpleasant feeling of tingling in the abdominal region and the lower back can also testify.
Some moms may have lightweight pain, but a strong pain as during menstruation, should not be. It is not worth worrying about this, as it should not be confused with menstrual expirations, as unlike the latter, they last about forty hours, exactly as much as the period of fixing the egg in the uterus flows.
The "interesting position" often women begin to suspect only after they detect the delay. It is necessary to take into account the fact that for the normal flow of laminating fetus, neither menstruation or ovulation is not characteristic and they will be absent throughout the nine months. The cause of such behavior of the body is to change the concentration indicators of sectoral elements.
ovaries from 3 weeks of pregnancy begin to actively produce female sex hormones. So, progesterone will begin to rise and will be equal to 50 nmol / l, estrogen will also increase. Gynecologists note that blood discharge at 3 week of pregnancy can have a different volume. However, they must be homogeneous and not to have an unpleasant smell. Their color can also vary from pinkish to a brown shade.
Fertilized egg, which is moving in the uterine tube, it is difficult to call the baby. This is an organism consisting of a variety of cells: for the fourth day after fertilization, it has already 7-12 blastomers. After 60 hours, it will turn into a moorulu - a spherical accumulation of 32 cells. Under the microscope, it looks like a fetus of mulberry. Inside the Morula, the cavity is gradually formed. As soon as it occupies 50% of the embryo volume, the Morula stage will end, and the embryo will switch to the development stage of blastocysts.
Blastocysts have a maximum of 4 days to get to the uterus and 48 hours to implanted into the endometrium. As a rule, implantation occurs on 6-7 days after fertilization.
In the embryoral fertilization, embryos are planted at these stages of development - Morula and Blastocyst.
By the end of the third obstetric week, the child is a cluster of 250 cells. It is less than 0.2 mm long and weigh no more than 2 μg. It will take place only 8-9 months, and the embryo will become a man with an increase of 45-55 cm and weighing from 2.5 to 5.5 kg.
Each woman who awaits the long-awaited moment of pregnancy, may feel free to talk about the accomplished miracle since 3 weeks of pregnancy. It is this period that denotes the exact fertilization of the egg, the promotion of the seed in the uterus, division and the beginning of the ripening of the fetus.
Most often, pregnancy at 3 week is not accompanied by a special feeling of a woman. Only a small number of future mothers can feel weakness and drowsiness. Sometimes there is a discomfort and the severity at the bottom of the abdomen, as well as the mood swings. But, if you have long been engaged in planning your pregnancy, then such symptoms may be simple experiences on the nervous soil, as well as to be provoked by PMS.
These are just external manifestations that are formed by the fact that the zygote has no connection with the body of a woman, therefore it is not able to influence the hormones. But what happens in your body? We will tell about it in more detail.
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