I have regular attacks of severe right chest and upper back pain. worsen with deep breaths, eased temporarily by anti acid. breast cancer history r.

Reflux?: Lots of causes of right sided chest pain and back pain. With antacid relief gastric reflux - where stomach acids move backwards up the esophagus - moves up the list. But this could be pneumonia, pleurisy, gall bladder, liver, kidney stone, and others. You should get it checked out by your doctor.

Relux: This sounds like reflux. I would seek attention from a gastrointestinal doctor.