My daughter had same gallbladder phantom pain along with many other side effects for months. She missed so many days of school and 3 gastros were clueless. Bottomline which i hope helps you, is that the medication dexilant which is another drug like the drug you are taking caused all the chest, gallbladder or pancreatitis pains. No place was this a warning for the drug, but I found other sights with people with the same horrible symtoms. Stop the prescription drugs and try a probiotic. I give my daughter Ultimate Flora by RenewLife. She still has gerd but the horrible pains are gone and seems better. She cant eat any salad dressing without getting reflux. Hope this helps. good luck.