My 15 year old daughter has occasional severe lower abdominal pain. She will feel the need to urinate and then won t be able to. She ends up with severe pain, curled up in a ball crying. This happens to her about once a month or so. We have a urologist who has conducted every test there is (invasive and otherwise) and everything comes back as normal. Any suggestions on what our next step should be. We ve been with the urologist for about a year. She s seen a gynecologist and all tests were negative. She also saw a doctor to see if she had diabetes, again negative.