Vaginal bleeding with slight back pain a week after menstruation may be ovulatory bleeding. During ovulation, the estrogen and progesterone levels in women’s body will temporarily decrease and part of the endometrium will lose its original hormonal support, resulting in vaginal bleeding, accompanied by back pain, which will only last for about 1-3 days, and the small amount of bleeding is a normal physiological phenomenon that does not require special treatment. If the bleeding is heavy, lasts for a long time, and the pain in the lower back increases with abnormal leucorrhea, it may be caused by endometrial hyperplasia or uterine polyps or tumors. Patients with uterine fibroids can also suffer from vaginal bleeding due to endocrine disorders caused by long-term improper diet and insufficient rest. Promptly go to the hospital to investigate the cause of the disease and carry out herbal treatment according to the guidance of professional doctors, and if necessary, undergo surgery.