If you have vaginal bleeding three days after your period, you need to look at the amount of bleeding and determine the cause of bleeding. 1. If the amount of bleeding is relatively small and ends naturally in about 1-2 days, it is probably caused by a small amount of endometrium that is not completely shed. Sometimes, for some reason, there may be unfinished menstrual blood stored in the uterine cavity, and after a few days, it is discharged from the body because of exercise and other reasons, so there will be a small amount of vaginal bleeding symptoms, these are normal physiological phenomena do not need to be dealt with. 2, if the bleeding is more than three days after the menstruation is clean, and continues for more than three days, probably because of poor ovarian function or because of excessive strain during menstruation If you’re not sure what you’re looking for, you should consult a gynaecologist and take a drug such as prozac under the guidance of the doctor.