Burning sensation in chest while inhaling smoke, gulping water or stretching left arm backward or forward Since almost 1 month I have a chest pain , feels like its just inside of the second rib from top and around 1 inch left from the center of the chest. I used to smoke occasionally..when this happened after a party.. sorry to say I have smoked that day.. next day I felt a burning sensation at the same area when I tried to smoke.. so I couldn t able to smoke anymore. I have quite smoking completely now. Now when I stretch my left arm behind or gulp water, I feel a pain there. When I inhale any smoke (from a vehicle or any other .. not only a cigarette smoke), it feels burning inside the same place. I am 34, male. Do I have a tumor or something? What Shall I do? Thank you..