COLON TEST THAT WAS NEGATIVE AND A UPPER GI TEST WHICH FOUND NOTHING.WHAT OTHER TEST SHOULD I HAVE TO CORRECT THIS PROBLEM.THE PAIN IS UNBEARABLE SOME DAYS,WHICH I HAVE TO TAKE PAIN MEDICATION TO EASE THE PAIN.THE CONSTANT PAIN ONLY HAPPENS WHEN I HAVE A BOWEL MOVEMENT.WHAT IS CAUSING THIS PAIN AND WHAT ARE MY NEXT OPTIONS BE TO TELL MY GAESTROINTERNOLOGIST O CHECK FOR TO GET THIS PROBLEM RESOLVED.PLEASE HELP.THANKS IN ADVANCE