hi i have a pain under my rib cage on the left hand side, this is a dull pain most days, other times its so bad I cant move, they have checked out my gallbladder and liver, and tell me that i have polyps in my gallbladder and some cysts on my liver, and they have done an upper GI that showed no issues with my stomach. I also have lots of gas can you tell me what else I should be checking with