When there is no blood coming out of the vagina and the discharge returns to its normal color, i.e. milky white or clear, the period is clean and will continue until the next menstrual period. In normal women, menstruation lasts for 3-7 days. If it is longer than 7 days, it is not normal, and some people will have brown discharge after menstruation, which is a symptom of lower estrogen levels in the body, and this is not normal. If long-term such a situation needs to be adjusted, you can eat soy foods, can help women to improve estrogen. In addition, there are also gynecological diseases that can cause irregular periods, such as inflammation of the uterus, inflammation of the vagina, endometriosis and endometriosis. If prolonged and dribbling menstruation occurs after cesarean section, and there is also the possibility of uterine scar diverticulum, gynecological ultrasound examination can be done.