The main consideration for vaginal bleeding after 10 days of menstruation is ovulatory bleeding. Under normal circumstances, a woman’s menstruation is about 5-7 days, 5-7 days plus 10 days, exactly 15 days, exactly in the period of ovulation, so, to consider ovulation bleeding. Ovulatory bleeding is usually characterized by a relatively small amount of vaginal bleeding that clears in 3-4 days, and the patient has mild abdominal distension or no discomfort. If this is the case, consider ovulatory bleeding. If the patient has a large amount of vaginal bleeding, bleeding for a long time, accompanied by abdominal pain, discomfort and other clinical symptoms, it should be considered that the bleeding is caused by inflammatory diseases or other reasons, and it is necessary to do gynecological internal examination, gynecological ultrasound, and hysteroscopy if necessary, to determine, find out the cause, and symptomatic treatment.