I have a theory that I am experiencing acid reflux, which is triggering Anxiety attacks. Usually after I eat, I feel a slight pressure around the diaphragm area and sometimes experience what I thought were "heart hiccups" (could be gas). At first, I would panic, thinking I was having a heart attack which would bring on Anxiety attacks: increased heartrate, pounding heartbeat, lightheadedness, weakness, hot/cold flashes, etc... Could this be true? I typically feel better after I burp. Just the other day I was running on the treadmill and I drank a bit of Gatorade while running. Shortly thereafter, I felt like my heart skipped a beat, which could be gas... not really sure.