You and i must be twins. I have the exact same issue. No stones on ultrasound, but finicky gallbladder.
I also have IBS tacked on to that... and am in the process of trying to figure out which foods I might be sensitive to that could be aggravating my gut.
My docs have told me "sounds like an irritable bowel, sounds like an irritable gallbladder", but they haven't offered any suggestions, and havent suggested a colonoscopy. I don't know if it would be ridiculous to request one, just to be SURE that my pains arent from some other problem? Maybe that is just my paranoia talking. The pains come and go, in fact, it hadn't bothered me for about a year, then I lost 10 lbs in the last few months, and the pains kicked up again. So that definitely sounds like GB....
I say AMEN to your losing faith in Western medicine. I am supremely confused about what my next step should be.