A little bit of blood during menstruation may be due to the fact that menstruation has not yet been cleared, or it may be due to abnormal vaginal bleeding caused by cervical disease or endometrial disease. 1. Menstruation is not yet clean: women’s menstruation usually lasts 2-8 days, with an average of 3-5 days, if there is bleeding in the last few days, it may be that the menstruation is not yet clean. 2. Cervical disease: When women suffer from cervicitis or cervical cancer, contact vaginal bleeding may occur. If the bleeding occurs a few days after the menstrual period, it may be mistaken as a sign that the menstrual period has not been cleared. 3. Endometrial diseases: Some endometrial diseases, such as endometritis and endometrial polyps, can also cause abnormal bleeding. If the bleeding coincides with the end of the period, it may be mistaken as a sign that the period has not completely cleared. If a small amount of vaginal bleeding occurs a few days after your period, you can observe it regularly. If the bleeding doesn’t stop, you need to go to the hospital in time to find out the cause of the bleeding.