I have had chest sensations like once monthly that lasts maybe anywhere from 3 days to 1 week. I have had panic attacks in the past (only 3 major ones) after a major stressful buildup. I went to ER twice and EKG fine, blood tests fine. I was on Zoloft for 6 months. I am off the meds and have had no attacks. I am healthy. I am about 30 pounds overweight. I do exercise. I have no symptoms when I exert myself. The sensations come and go throughout the day. Kind of hard to describe. I call it "faint zings", sometimes slightly sharp sensations. I experience it from the left to left ,middle chest region. It is not superficial (ie: muscle diaphram, etc.) I felt yesterday that when I'd breath real deep and hold it, I would feel it slightly. Does gas cause these symptoms? Has anyone had this? Any input greatly appreciated. Thank you!!!! :) :confused: