Menstrual blood does not flow out may be accompanied by other discomfort, according to the different accompanying symptoms can be estimated the cause of the menstrual blood does not come down, take the corresponding drugs to regulate. There are mainly the following cases: 1. If the menstrual blood does not come due to cold, cold and internal stagnation of silt and blood, accompanied by abdominal distension and pain, you can take compound motherwort cream to invigorate blood stasis or regulate menstruation; 2. If the menstrual flow is low due to lack of qi and blood, dizziness, weakness, pallor, abdominal distension and abdominal pain, you can take Bazhen Yimu Pill or Gui Shen Pill to regulate it; 3. If you have recently undergone gynecological surgery with abdominal pain, it is recommended to perform ultrasound examination to understand whether there is cervical adhesions that cause menstrual blood to accumulate and cannot be discharged, and then you need to separate the cervical adhesions to promote the flow of menstrual blood. If the menstruation is delayed for a week and still does not come, you should also exclude the possibility of pregnancy.