The fertility in Russian Federation doesn’t reach the level needed even for usual population reproduction. Cumulative fertility rate makes 1,6 while for usual reproduction of population without increasing the number of people cumulative rate equal to 2,11 — 2,15 is needed. There are several reasons of such situation and among them the main place is held by drastically decreasing number of recurring delivery, which means decreasing the number of children in the family. There are enough researches made on this subject, but the current research is referred to very important theme — the influence of pregnancy quality, carrying of prenate and the delivery process as such on mother and — naturally — on her preparedness for the new pregnancy.