Can the seventh day of menstruation be pregnant

Menstruation is regular, menstrual cycle in 28 days of women in the seventh day of menstruation will not be pregnant, because sperm in the female body can survive 72 hours, eggs can survive 24 hours, that is, three days before ovulation, ovulation day is easy to get pregnant time. Menstruation cycle is 28 days of women, the approximate ovulation day is about the fourteenth day of menstruation, so the seventh day of menstruation will not be pregnant. For women with short menstrual cycles, such as 22 or 23 days, it is very likely that they will get pregnant on the seventh day of menstruation. If the menstrual cycle is irregular or the woman with short menstrual cycle does not want to get pregnant, take contraceptive measures after menstruation is clean.