When is it least likely to get pregnant?

Before and after menstruation is the most difficult time to get pregnant, this is for women with normal menstrual cycle, that is, the patient's usual menstrual cycle is fixed, and can know when his next menstruation will come, more importantly, menstruation must not be too long, generally menstruation time is 3 to 5 days, the longest is not more than seven days, if in menstruation on the sixth to seventh days of cohabitation, rarely pregnant, but if menstruation time is relatively long, For example, some people come to seven or eight days before clean, to nine days, ten days before the same room, this time from ovulation has been very close, so this time the same room may also be pregnant, and before menstruation because of ovulation, egg cells discharged, its survival time is generally 24 hours, up to 48 hours.