The normal physiological cycle is 5-7 days. The bleeding gradually decreases when the menstruation is about to end, so there will be a small amount of vaginal bleeding on the 5th-7th day. This is a normal physiological phenomenon, not a sign of disease, and does not require special treatment. However, you should manage your personal hygiene well and wash your vulva with water every day, just use warm water to avoid vaginal inflammation, which may cause itching and other symptoms and discomfort in the perineum. So a little bit of blood in the late menstrual period should not be overly nervous. If there is dripping for more than 10 days you need to see a gynecologist, this is an abnormal phenomenon.