Sorry to hear about all your problems!
As for Gallbladder problems they say the 4 F's make you at higher risk. Fat, Forty, Female and Fertile. I hardly doubt that though. I am 25, 110 lbs, yes I'm female and well I'm not fertile anymore because I had my tubes tied
I am scheduled to have my GB removed on the 22nd of March due to a thickened wall and lots of polyps. I suffer from pain under the right rib cage that goes to left side and in my back at times, nausea and fatigue. I also have mild gastritis which might be causing some of these symptoms as well.
Go for your ultrasound and that should tell you if anything is wrong with your GB. In the meantime don't worry!
Good Luck!
-Donna