The normal time of menstruation is within 7 days, and any period longer than 7 days is abnormal. The fact that the period has not cleared by 8 days suggests that there can be many factors. For example, the presence of cysts in the adnexal area, or due to polyps in the cervical canal, uterine fibroids, or submucosal fibroids, may cause the period to be unclean at 8 days. In such a case, you should go to the hospital for an ultrasound examination to determine the thickness of the endometrium, to determine whether there are any abnormalities in the bilateral adnexa and the uterus, and to prescribe anti-inflammatory drugs and hemostatic drugs to stop the bleeding first. On 2-5 days after the next menstrual period, a hormone test will be performed on an empty stomach to rule out any abnormalities in hormone levels. When there is hormonal disorder, there may also be a situation that the menstruation does not clear after 8 days. You can take oral medication for cycle regulation, such as Da-Ying-35, Eusebio or Eusebio, to avoid prolonged menstrual dripping, which may cause physical effects.