All about pregnancy and childbirth: advice to future mothers. Find out the whole truth about pregnancy and childbirth and get advice from specialists in pregnancy planning using our application. Development of the fetus for weeks of pregnancy. Also in the appendix there is a detailed description of each week of pregnancy from 1 to 40. Sensations of mothers and a description of the development of the fetus on each week of pregnancy. Pregnancy by week, pregnancy calendar, photo of ultrasound during pregnancy.