My kid is 13 yr old.and she is suffering from lower abdominal pain near bellybutton. .I had taken her to various doctors like pediatrician,gyno., ortho for backpain and even gastroenterologist and she was given whole abdominal check profile ...and scans too..all seem to be normal and she was on antibiotics for many times and painkillers too...but still her abdominal pain had not gone..plz advice which doctor should I visit now and wat treatment she can get...