The bleeding caused by sexual intercourse just after menstruation does not require special treatment, the bleeding can disappear on its own. The endometrium of the uterus is unstable when a woman has just finished her period. If you have sex at this time, the impact of exercise and the stimulation of the prostatic fluid secreted by the man can cause abnormal contraction of the uterus, so it can cause the endometrium, which was not particularly stable, to shed again. Because the endometrium has been shed in large quantities during normal menstruation, the bleeding caused by this kind of sex does not last too long and will end naturally in a day’s time. If the bleeding is not completely cleared for more than two days, you need to go to the hospital for ultrasound, gynecological examination, cervical screening, etc. To understand the endometrium, cervix and vagina, if there are any abnormalities.