Menstrual pain during menstruation is a normal thing experienced by women. But there is also excessive menstrual pain that interferes with activities. In addition to interfering with activities during the day, menstrual pain can also cause difficulty sleeping at night. Menstrual pain is caused by abdominal cramps due to the tightened muscles due to contractions of the uterus. However, there are some sleeping positions you can do to reduce menstrual pain.