I have been having upper chest muscle pain in my sternum and more in my right pec, I have been exercising these particular muscle groups for the last month as im trying to get in shape .I've discontinued since this past Thurs. 3 days ago. it seems pretty painful. I cant take any inflammatory medicines as im on warfarin. I've taken a Norco and 2 Tylenol pm and am icing it now and it still is very sore. it don't feel like its under my ribs but rather all muscular, im 45 and don't want to be having a heart attack or anything. I did have a pulmonary embolism this past January and am recovering good from it. what should I do?