The normal duration of menstruation is 28-30 days, and in some cases it may be more frequent at 21 days. However, if there is a menstrual period at an interval of 10 days, it is possible that it is not a period but an abnormal bleeding, which can be caused by many factors. For example, changes in hormone levels in the body, fibroids, endometrial polyps, human papillomavirus infection of the cervix may cause bleeding, and even ovulation may cause bleeding. At this time, it is recommended not to panic excessively, to go to the hospital to register, gynecological department to carry out ultrasound examination, including endocrine hormone test, in the endocrine hormone test choose fasting, try not to eat food and drink water, so as not to affect the results of the test. Depending on the situation, anti-inflammatory and hemostatic drugs can be prescribed to stop the bleeding first, otherwise such prolonged bleeding will cause there to be infections and even confusion in the menstrual cycle, and there will be factors of anemia that occur, so treatment should be carried out.