Suggest Treatment For A Constant Burning Sensation In The Sternum

I HAVE SUFFERED FOR FOUR MONTHS WITH A CONSTANT BURNING DOWN MY STERNUM AND UNDER MY RIGHT BREAST. THIS FOLLOWS ALONG MY RIBS TO MY BACK JUST AT THE BRA LINE, IN THE PAST FEW DAYS THE BURNING PAIN HAS MIGRATED DOWN MY LEFT LEG AND FEELS LIKE A RAZOR BURN. I DID SHAVE MY LEGS A WEEK AGO. I CAN NOT SLEEEP AT NIGHT. I HAVE TRIED ICE, HEAT, BIO FREEZE, LOTIONS, WARM SHOWERS GIVE A TEMPORARY RELIEF.