I had my gall bladder removed July 31st and I am in pain on my right side under my rib cage. I keep thinking that I haven't healed, but I have pain more often now than before the surgery! I don't drink or even eat much of anything that would cause pain. In fact the things that make me sick now didn't bother me before the surgery.
I had mine removed in January and i find there are few things that still bother me, bringing back that familiar pain i suffered for 8 months, alcohol being one of them, I think pretty much anything with high acidity or gassy bother me the most, usually I take a Zantac and helps shortly after. Let me know what the surgeon says it is. Good luck and feel better.