Blood at every intercourse may have cervical inflammation or even cervical malignant lesions. When a woman has cervicitis or cervical erosion, her cervix will bleed a little when stimulated by intercourse. The early symptom of cervical cancer is contact bleeding. Patients with cervical cancer have rich blood flow in the cervical area, and the blood vessels are brittle and easy to bleed, and sometimes there is a lot of bleeding. It is recommended to go to hospital for cervical biopsy as soon as possible to confirm the diagnosis of cervical cancer, and if there is malignant lesion in the cervix, surgery should be performed as soon as possible. Having intercourse before and after menstruation may cause irritating small amount of bleeding. Some women with estrogen deficiency in the body may have ovulatory bleeding, and intercourse during ovulation may also have a small amount of bleeding. Bleeding during intercourse can be determined by a combination of menstrual cycles.