My husband had a quadruple bypass in April 2009. When he does some things, like pulling, pushing, lifting...it causes pain in his chest. He has told his doctor, had a stress test done and it seems it's just residual pain from the surgery. His though has been since day 1, it's not something that came on later. If you are having pain and you haven't had it all along, I think I would talk to the cardiologist.