10 days before menstruation with the same room will be pregnant?

Pregnancy is possible if coitus occurs 10 days before menstruation. The 10th day before menstruation is the boundary between ovulation and safety. If the individual's menstrual cycle is very regular and never shows early or late phenomenon, the possibility of pregnancy is not high at this time, and in most cases pregnancy will not be successful. If the individual menstrual cycle is unstable, there are often months delayed, the ovulation time may also occur later, in this case it may show an increased probability of pregnancy. In short, this day is not absolutely safe, if you do not want to get pregnant, at this time in the same room or need to take effective contraceptive measures can, it is best to be able to use condoms.