Pain in right side of chest. for months. taking nexium (esomeprazole) now which does help but still have pain everyday feels like muscle pain. not gallbladder?

Various explanations: Chronic right sided chest pain in fortyish female suspect for tziet's syndrome, also called costochondritis; inflammation of junction where rib joins cartilage, next to sternum. Diagnosis easily made by direct palpation of pain loci, arousing exquisite pain causing patient reflexive withdrawal from palpating fingertip. A single cortisone injection can dramatically resolve. Cause is querisome.