<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Ive been experiencing painful menstruation, long menstrual periods and sharp abdominal pain. What could be the problem?  <response>: Based on your symptoms, it sounds like you may have Mittelschmerz. It is a condition that causes lower abdominal discomfort and pain during ovulation. It can also cause long menstrual periods. 