If you are bleeding again after 8 days of delayed menstruation, you first need to visit the hospital to have your blood HCG level checked. If the blood HCG level rises then it indicates abnormal uterine bleeding due to pregnancy and further gynecological ultrasound is needed. Based on the gynecologic ultrasound, a decision will be made on what to do next. If the blood HCG level does not rise, it is considered to be caused by menstrual disorders and vaginal bleeding needs to be observed. If the vaginal bleeding clears on its own in 7 days, no special treatment is needed. Patients should pay attention to rest, don’t give themselves too much stress, keep emotional stability, ensure regularity of life and rest, etc., and observe the situation of menstruation next month.