My wife gave birth (Caesarean operation) to a child on 23-3-09. After that we had a sexual intercourse on 14-6-09 (almost after 3 months of delivery). While ejaculation I tried to pull out but some portion entered the vagina. We are afraid if this can lead to pregnancy.. As since the delivery she has not experienced her periods till now.. I also want to know Already 3 months passed.. Normally in such child birth how much time it takes to start menstrual periods.