Eight days before menstruation can you be pregnant with the same room

Eight days before menstruation in menstrual safety period, the same room is generally not pregnant. But ovulation is relative to the menstrual regularity of the time and menstrual cycle calculated, in actual life may show ovulation in advance, if ovulation in advance, in the eighth day of menstruation sex life may also be pregnant. Women of appropriate age if regular menstruation, ovulation day is generally in the next menstrual cramps before the fourteen days or so, before and after ovulation within ten days of sexual life pregnancy probability is relatively large, this period of time is called ovulation.