Menstruation is not discharged from the fallopian tubes, the fallopian tubes are located on both sides of the uterine body, is the uterus and ovaries to transport fertilized eggs between the channel, is the sperm, the egg meet the fertilization of the place, and menstruation has nothing to do with the discharge. When the amount of menstruation is particularly high or the intrauterine pressure is particularly high during strenuous activities, resulting in the blood in the uterine cavity to reverse into the fallopian tube, resulting in the fallopian tube endometrium cyclic detachment, the appearance of vaginal bleeding is the fallopian tube of the endometriosis, and the consequences are more serious. Menstrual blood is dark red in color and contains, in addition to blood, endometrial debris, inflammatory cells, cervical mucus and epithelial cells shed from the vagina. Normal menstruation has a cycle, normal 21-35 days, an average of 28 days, menstruation is a normal physiological phenomenon, there is no obvious discomfort during menstruation, some people experience lower abdominal swelling or lumbosacral pain, if the pain during menstruation is obvious and unbearable, you need to go to a specialized hospital for consultation.