I have had this prob off and on for 20 years. They think it is IBS, but I just don t get it. I have pain rt side under my breast (like spasms) and burning in my upper back, same right side. I have a feeling it is gas that is causing the problem. but is always upper chest area. When it is bad, I can t sit or lay down. Sometimes the pain is so bad, it is hard to breath. I don t know what causes it, but I know food irritates it, and makes the pain worse. It will eventually pass, but sometimes not for hours... I know that it is not life threatening, since I have it so long, but I worry because my mom passed away from colon cancer. Your thoughts would be appreciated.