Bleeding after coitus, abdominal pain to consider the possibility of ovulation and cervical erosion, if in the ovulation around sexual relations, this will stimulate the ovary caused by ovulation, follicle rupture, there will be a small amount of vaginal bleeding and pain in the lower abdomen; to stop sex, pay attention to rest, keep the vulva clean and dry, the bleeding will be in two or three days after the natural stop, do not need special treatment. Cervical erosion in the process of coitus, due to constant contact with the cervix, easy to cause the surface of the erosion of bleeding, there is pain that the erosion has been quite serious; to pay attention to, go to the hospital as soon as possible to check and treat, it is recommended that the best to do a HPV and cervical TCT examination.