Hello all: I have this situation where I feel discomfort, pressure/burning sensation on my left side of chest sometimes. It often happens if I am stressed for a day or two. I feel this discomfort sometimes close to left under arms. I feel better if I press/squeeze the part with discomfort.. I also feel little shortness of breath. I dont know if it is acid influx or gas or anything more. Feeling this discomfor makes me more stressful. Any ideas what I am experiencing? I just wanted to get some ideas before I head to doctor. thanks in advance.