Hello, may be COSTOCHONDRITIS whichis very painful. But adv ECG to exclude anything related to heart. When scan is negative probably it's psycosomatic pain. So consuslt a general physician MD/ psychiatrist.tab buspiron10 mg two times a day after food for seven to ten days .if u feel better continue it. Plenty of liqids, light diet. Ok.

Pain is most probably musculoskeletal, ECG must be done to rule out heart condition, painkillers and muscle relaxants will help