Recurrence of malignant discharge can be caused by many factors, but straining is only one of them. When the body is tired, it may affect the recovery of the uterus and lead to recurring dew. The recurrence of recurring dew within 45 days after delivery is usually associated with lack of sleep, strenuous exercise and overexertion. However, recurrent nightmare can also be caused by residual intrauterine milk and infections, and if there is placenta or fetal membrane residue, recurrent nightmare can also occur. You should go to the gynecologist for an abdominal ultrasound examination around 42 days after delivery to check the recovery of the uterus. If there is residual milk in the uterus, you can relieve the symptoms by scraping the uterus and taking medication to promote the drainage of the milk. If there is an intrauterine infection, it is best to treat it with antibiotics under the guidance of a doctor to avoid aggravating the infection and affecting future fertility. Women who have recurring nightmare need to pay attention to personal hygiene during the menstrual period, wash and change their underwear regularly, pay attention to vulva hygiene, and preferably do not have intercourse too early to avoid infection. Women do not need to worry too much, try to maintain a peaceful state of mind, so that the body can get a better recovery.