It is possible to get pregnant when having intercourse with your period in 10 days, which is slightly lower than the pregnancy that occurs during normal ovulation. It is because only the egg is alive during intercourse and the sperm and egg can unite and develop into a fertilized egg before pregnancy can occur. Normally, women ovulate in the middle of two periods, but when they are under stress or tired, the egg may be delayed, i.e. ovulation occurs 10 days before menstruation, so pregnancy may occur during intercourse. A woman can determine ovulation by having an ultrasound to detect a follicle development of about 2 cm or a positive ovulation test, and a woman’s leukorrhea secretion is colorless, transparent and with a high degree of lacrimation, which proves that ovulation will occur in a short period of time.