He has a point... The meds may help you and you didn't try them???
What do I think you should do? 1)Get another GI Doc who is willing to rule out other GI disorders via some testing. And because you obviously have little or no respect for or trust in your current one.2)I do NOT think a CAT scan is necessary from what you told us of your symptoms. (Which, by the way, seem mild.. to me anyway) 3)See some other Dr about your possible OCD.