Recently I am experiencing severe gas pains under right breast around to lower back. A few years ago I was diagnosed with ulcers and eroding esophagitis. Prescriptions and watching my diet cured these ailments. However my pcp still has me taking prilosec 20mg. Recently I have started having these pains. I have been taking beano, before meals, and mylanta if necessary. Sometimes I get sharp jabbing pains in upper chest area, lasting only seconds. Due to see pcp in 2 weeks. If suspect is gall bladder what tests would determine and would the result end in surgery? ANyone can enlight me until my dr. visit, I would be grateful.