Obstetrical pregnancy calendar begins from the first day of the last critical (monthly) days, when the woman is not yet pregnant. This is because a new cycle has started, which contributed to the birth of a new life. And if you are planning a pregnancy, this week is very important for you. Now is the time when you need to prepare for the conception.
According to statistics, a woman becomes pregnant on the 14th day of the menstrual cycle. This is in the middle of the cycle. But the point of obstetric count or forty weeks is the beginning of the last menstruation. Therefore, about the features of conception and development Read the full entry »
In the second week of pregnancy the woman's body is still preparing for fertilization, these are the very last days before the natural conception. In the ovary of a woman, an egg was identified - the leader. It is located in a liquid-filled graafac bubble. At the end of the second week, the graafovaya bubble will become so large that it protrudes over the very surface of the ovary. This is how the preparation for ovulation takes place, and then the mature egg leaves its own from the ovary to the abdominal cavity. Next, the egg will fall into the fallopian tube, where the meeting with the active sperm will take place. If the fertilization does not happen, then the egg cell 
At the end of the second, and at the beginning of the third week, a child is conceived. Obstetricians calculate the duration of pregnancy from the very beginning of the last menstruation, and the conception itself begins in the middle of the menstrual cycle. And the third midwifery week is actually the first week for your child and is still a secret for the future mom. Since the moment when the male cell merges with the female one, it takes about three to six hours. Moving forward and not stopping for a second, the multimillion army of spermatozoons hurries to their goal. Read the rest of this 
At 4 weeks of pregnancy in the body of the future mother, the fetal egg is transformed into an embryo, which is already attached to the uterine wall and completely "buried" into it. The fourth week of pregnancy is very important for the fetus. Right now, embryonic organs (yolk sac, chorion, amnion) develop outside, which provide breathing, nutrition, comprehensive protection and biochemical support for the baby. Chorion participates in the generation of the placenta, and the amnion is the formation of a fetal bladder. In the period of implantation, the outer cells begin to divide and integrate into the uterine membrane, where 
At the fifth week of pregnancy, the baby is more like a cylindrical body with a length of no more than 2.5 mm. Logic can be traced in the division of cells and you can clearly see the location of the legs, head, back, abdomen. You can see the spinal cord and the neural tube (all this is the future spine of the baby and the spinal cord). 
The pregnancy test gave a positive result and signs of an early toxicosis make themselves felt, and the baby develops at an incredible rate at week 6. Congratulations! You will have a baby! This is both joy and responsibility. During this period, the neural tube of the embryo was already tightened with tissue. The end of the neural tube forms the brain. Against the background of the future face, future eyes form in the form of visual bubbles. The heart begins to beat, although it represents only a microscopic tube. On the ultrasound scanner, it is realistic to catch the first cuts of the heart. At the 6th week of pregnancy, the first rudiments of the arms and legs of the child appear, the formation takes place. 
For a woman, this period is characterized by the fact that the child at this time formed two hemispheres of the brain, is gaining momentum in development and the nervous system. The size of the head of the embryo is half the size of the baby. Continues to form 5 divisions of the brain, but for now it's five bubbles. Develop lungs, kidneys and bronchi. The placenta becomes denser. By the end of the 7th week of pregnancy, there will be utero-placental blood circulation of the fetus and such vital processes as nutrition and respiration will occur through the vessels of the umbilical cord and the placenta. The fetus still has a tail that will eventually disappear. At the 7th week of pregnancy small palms are formed, 
At the eighth week of pregnancy, you can safely say that in the woman's belly does not live an embryo, similar to a baby mammal, and a small baby. The child at this time begins to make spontaneous movements. After all, most organs in the child have already been formed, but bones and joints continue to develop, the hands and fingers are clearly visible on the ultrasound. And the lower extremities begin to develop later. On the face there are auricles, a nose, and also an upper lip. The eighth week is the onset of the optic nerve. The outlines of the eyes become more distinct, and the lichiko accepts 
