question: my 6 year old son has severe stomach pain, it comes and goes. He had a CT scan at the emergency room last night and they said all came back normal. They said it was not his appendix. This happened about 6 months ago and it went away. The pain was severe yesterday and lasted about 5 hours on and off. Could this be his gallbladder? If so would the CT scan show that? There is no fever, vomiting, diarreah, nothing but the pain. The ER doctor said it was gas but I am not comfortable with that diagnosis. It is mildly hurting this morning but not as severe