On the fourth week of pregnancy in an organism of the woman the horionichesky gonadotrophin of the person (HGP) which existence in urine is defined by rapid tests for pregnancy begins to be developed.
On the 4th week of pregnancy its early symptoms appear. Among them there are an increased fatigue, increase in mammary glands, increases in sensitivity of nipples. Such changes in an organism of the pregnant woman happen due to work of a yellow body.
The test for pregnancy this week can still show negative result. In case the treasured second strip on it did not appear, you should not be upset, it is necessary to repeat the test in 48 hours and it is obligatory with a morning portion of urine. Not all tests are equally sensitive, the options defining existence in HGCh hormone urine 10-15 Mme/ml will be suitable for definition of pregnancy on the fourth week.
Mothers occurring during this period in an organism and an embryo of change are extremely important. Extra germinal bodies develop in four weeks of pregnancy: zheltochny bag, amnion and chorion. From them all bodies of a fruit develop further. They provide the main processes of activity of an embryo: breath, food, protection. The placenta is formed of chorion, and amnion turns into a fetal bubble. Future child on the 4th week resembles superficially a flat disk from several layers, each of which is a primogenitor of various fabrics and bodies of the child. Last weekNext week