<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi Doctor, I have been experiencing some lower abdominal pain, long menstrual periods, and pelvic pain. Do you know what might be causing this?  <response>: It sounds like you might be experiencing premenstrual tension syndrome. This is a common condition that affects many women before their periods. There are several treatment options available, including medications and lifestyle changes, that can help manage your symptoms. 