The main causes of bleeding during ovulation are hormonal changes, cervical disease and damage to the vaginal mucosa, etc. When this happens, the different causes should be dealt with accordingly. 1. Hormonal changes: When a woman is ovulating, the level of estrogen and progesterone in her body will change accordingly, causing the endometrium to partially shed, which may lead to bleeding during intercourse. This is a normal physiological phenomenon. Keep the vulva clean and pay attention to rest during this period, and the bleeding will usually disappear in less than 2 days. 2. Cervical diseases: For example, cervicitis or occupational lesions, such as endometrial polyps and myomas convex to the mucosa, can lead to uneven endometrium, and during intercourse, part of the mucosa will be shed by external force, resulting in vaginal bleeding. If you have repeated bleeding, you should go to the hospital immediately to clarify the specific cause of bleeding. If it is cervicitis, medication such as povidone-based suppositories can be administered as prescribed by the doctor, and if it is cervical cancer, surgery is required. If it is clear that there is an occupying lesion in the uterine cavity, hysteroscopic surgery may be required. 3. Damaged vaginal mucosa: If you have intercourse during ovulation and have rough sex, it may cause damage to the vaginal mucosa and manifest as bleeding after intercourse, and you should stop having sex at this time. If the bleeding is small, it can be observed temporarily, but if other uncomfortable symptoms appear, such as abdominal pain, you should go to the hospital in time and take anti-inflammatory drugs or anti-infective drugs, such as metronidazole and gynecological Qianjin tablets, as prescribed by the doctor.