Why is there bleeding during intercourse a few days before the expected period?

Bleeding during intercourse a few days before menstruation may be caused by either physiological or pathological factors, with pathological causes generally related to conditions such as cervicitis or cervical polyps. Detailed analysis is as follows:

I. Physiological Causes

Menstrual cycles can be altered due to various factors including hormones, emotions, environment, and diet. Engaging in intercourse several days before menstruation may trigger strong uterine contractions, leading to early onset of menstruation and resulting in bleeding. Usually, no special treatment is required—maintaining proper menstrual hygiene is sufficient.

II. Pathological Causes

1. Cervicitis

Inflammation of the cervix can cause congestion and swelling of the cervical surface. During intercourse, irritation or damage to the cervical mucosa may lead to bleeding. Treatment may include medications such as Kangongyan tablets (antiphlogistic for cervicitis), Xiaomi suppositories, or Baofukang suppositories, used under medical guidance.

2. Cervical Polyps

Cervical polyps may develop due to long-term stimulation from chronic inflammation. These polyps are fragile and prone to bleeding when touched during intercourse. Surgical removal at a hospital is generally recommended.

In addition to the above, contact bleeding could also result from submucosal fibroids, endometrial cancer, or cervical cancer. It is advised to temporarily avoid intercourse and promptly visit a gynecologist to determine the underlying cause and receive appropriate treatment.