Due to the excessive pressure of work and life, endocrine dysfunction will occur, and sometimes irregular menstruation and dysmenorrhea will occur. As for diarrhea, it is probably because some people in damp heat constitution occasionally want to eat cold food during menstruation, which leads to digestive tract dysfunction and transient diarrhea. It is suggested to take a rest during menstruation, avoid heavy physical labor and cold food. If necessary, cook some soup with ginger and brown sugar and take it before going to bed. The effect is good. As for normal sexual life but never pregnant, you should go to a professional regular hospital. Both husband and wife should have a fertility check-up, and after understanding the cause, they will get better soon after symptomatic treatment. Have a happy day!