due to gallstones.. if a gallstone gets trapped in the bile duct, it causes bile to backup into the pancreas and every doctor I talked with told me that was excruciating, and more than likely, what I was going through.. The issue with gallbladder problems - and I dunno if you have them due to minor pain - is that the dang thing will rupture, get infected, and then you die.. the radiologist shooting my x-rays told me her sister died from that same scenario and, just recently, a good friend's wife had her gallbladder rupture and she was in the hospital fighting for her life for 6 weeks.. she just got out, but is still in bad shape..
So, yeah, get that checked.. but, unless you're having severe pain, I don't think its gallbladder.. unless you're the toughest guy on Earth..
Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..