Hi, I am 20 years old and have a burning sensation in the center of my chest. It occurs while I rest, or relax. Yesterday, I hit the gym on the treadmill and stair climber. No breathing problems, shortness of breath nausea, or anything. I don't have any pain in my arms, with the exception of them being sore from the workout (When I flex). No pain in my neck or jaw. Occasionally, when I take a deep breath, I get a pain in my chest on my right side. Doens't happen all day, but on occasions, throughout. I don't feel weak or anything, but I have been extremely stressed, since my mother was recently diagnosed with cancer and since I am having troubles in school. Could this be GERD or Angina? I am a little overweight. I'm not exactly a healthy eater, nor do I excercize regularly. When I do excersize, I get no shortness of breath. Help?