Calculating weeks can be slightly complicated if pregnancy occurs during menstruation. So that means, yes, it is possible to get pregnant during your period. Although the chances are very low and there are no fertile days or a window of fertility during this period, pregnancy is possible, especially if intercourse occurs during the end of the period. According to some research, sperm can survive in a woman's body for 5 to 7 days. If ovulation occurs during this period, it is possible that pregnancy will occur.\r