So what is embryo implantation?
After that, as from the ripened follicle the egg ready for fertilization was released, it, in case of unprotected sexual intercourse, meets with a spermatozoon. Provided qualitative sperm (that is, if the spermatozoa are healthy and nimble) and if the woman has no problems with the patency of the pipes, fertilization takes place. After this, the egg moves through the fallopian tubes. At this time, the egg is protected from negative effects, because it is covered with a shiny shell, consisting of strong glycoproteins. But on the day of implantation of the embryo, this membrane is discarded to allow the embryo to penetrate the endometrium and attach itself to it. The introduction of special enzymes promotes the introduction of the embryo. The endometrium continues to grow, and it turns out that the embryo is being introduced even more deeply. The minimum thickness of the mucous membrane of the uterus for successful insertion should be 10-13 millimeters. But only this is not enough for the pregnancy to take place. For example, the endometrium should also contain a sufficient number of nutrients. And also at this time in the body of women, the production of the hormone progesterone should start to increase, which stimulates an even greater growth of the endometrium and promotes delay in menstruation.
But, if the embryo turned out to be "substandard" - with pathologies or gross genetic disorders, implantation, most likely, will not happen. Thus, natural selection takes place, and pregnancy "will break." Even if implantation does occur in this case, the body will still reject the embryo. And the woman will have another menstruation.
In case of successful embryo implantation, the woman's organism starts to work under a new scenario. Cells of the uterine mucosa that contact the embryo are transformed. They are transformed into decidual cells, which are rich in nutrients. They are involved in the formation of the placenta. The woman immediately changes the hormonal background, and the cells that surround the embryo begin to produce the hormone of human chorionic gonadotropin. In the woman's uterus, the blood flow increases. Since that moment, pregnancy begins in her body and begins to develop.
Symptoms of embryo implantation
At first glance, it may seem strange and surprising that the microprocesses that occur inside the woman's body can be felt in some way. Nevertheless, it has already been proved that this is possible. Some women during the embryo implantation in the uterus wall felt minor pain in the lower abdomen. A certain number of expectant mothers complained of drowsiness, weakness and dizziness. But the most eloquent symptom that implantation occurs is spotting. More often these extracts are painted in pink or light brown color. Looking ahead, it should be noted that the absence of any secretions is also a variant of the norm. As for implantation bleeding - do not be afraid, because everything is easily explained. During the introduction of a fertilized egg into the wall of the uterus, the mucous layer breaks down, which in turn provokes minor bloody discharge. If there are no pathological phenomena, in two or three days the "daub" will disappear. If a woman has planned a pregnancy and certainly knows that the probability of pregnancy is high, and the discharge does not stop, but also intensify, it is worthwhile to see a doctor.
Another reliable indication of the implantation occurred is the "westing off" of the basal temperature chart. As you know, during the ovulation period, the basal temperature of a woman rises, which is clearly visible according to the schedule that she conducts in order to determine the day of ovulation. Recall that basal temperature in the rectum is measured with a thermometer. It is necessary to perform the manipulation daily (or rather, every day) at the same time, without getting out of bed after a night's sleep. Only observations during the six months or a year can be considered as such that they will correctly calculate ovulation. So, if the basal temperature chart shows a decrease of 1-1 after the rise, 5 degrees, then - implantation occurred.
Embryo implantation with in vitro fertilization
In extracorporeal fertilization, embryo implantation usually occurs on the 10th day from the moment of ovulation, which is several days after implantation, which occurs with natural fertilization. But, unfortunately, quite often during IVF procedure, implantation is not observed at all. Typically, doctors try to establish the cause of failure and do everything possible to implantation, in the end, took place. To increase the chances of success, a woman is implanted with 2-3 eggs in a test tube. This procedure does not take much time: just a few minutes - and the embryologist, using a special elastic catheter, introduces embryos into the uterine cavity. Further all occurs precisely so, as well as with natural fertilization. However, there is a small nuance that is that a woman who uses IVF to take care of her body and to avoid pregnancy failure should take special medications.
Whatever way fertilization takes place, let the miracle happen. And the result of this miracle is a healthy baby and happy parents!