I have fullness in upper chest right under my collarbones mostly on the left but at times also the right side, tenderness over the stomach area, some boating with gas, fullness behind the sternum and into the throat. If i cough, I feel some sharpness in the lungs. These symptoms come and go. I had spicy foods during the Super Bowl games which really bothered my stomach. Tums help and Pepcid AC has helped, but Iwould like to find out which direction to pursue---stomach, lungs, heart?