I am having mine taken out in two weeks.
and trust me....you will def know when its your gall bladder. It usually, for me, acts up about an hour after eating anything that triggers it...usually anything high in fat content or greasy. The pain starts under the ribcage and then radiates into my back. it is the worst pain imaginable and it sticks around for quite a while. my worst attack was for 3 solid days.

it is hard sometimes to diagnose with bypass patients, from what i understand. we dont neccesarily get stones, but we do get sludge in there. my ultrasound didnt show anything and my surgeon then sent me for a nuclear study called a desida(sp?) scan, which showed a very low function level.
if you think it is your GB, ask your surgeon to look into it. it is not something, once it gets worse, that you want to go thru regularly...
feel well....Michele