Menstruation comes a few days before the same room can be pregnant

If the menstrual cycle is regular at ordinary times, the menstrual cycle is 28 to 30 days, and the same room may be pregnant about 14 days before menstruation, because ovulation is generally about 14 days before the next menstruation, and the chance of pregnancy in the same room before and after ovulation is relatively high, but because sperm can survive for 24 to 48 hours in the body, eggs can also survive for about 72 hours in the body, so it is possible to be pregnant in the same room for 5 days before and after ovulation. Generally 7 days before menstruation, 8 days after menstruation is relatively safe period, other time in the same room may be pregnant, safe period contraception is actually not safe, to do a good job of contraception, preferably with condoms. If you want to increase the chances of pregnancy, it is best to choose the same room before and after ovulation, and the number of times in the same room should not be too much, usually pay attention to rest, do not stay up late.