The fact is that you can’t get pregnant if you have intercourse just after your period, but you should also be careful to rule out the possibility of early ovulation. Normally, a woman is still in the follicular phase at the end of her period, when the lining of the uterus is in the proliferative phase. This is the time when the endometrium is proliferating, so intercourse at this time will not lead to pregnancy. However, under certain special circumstances, such as ovarian stimulation or endocrine disorders, etc., leading to early ovulation, if intercourse may lead to pregnancy. Therefore, under normal circumstances, intercourse just after menstruation will not cause pregnancy, but it is still recommended to use condoms and other contraceptive measures. If your period is delayed, you should go to the hospital as soon as possible to rule out the possibility of pregnancy.