Can you get into a cardiologist and get an echo and an event monitor done? That should let you know how everything is doing. I have an anxiety disorder and GERD. I have had tachycardia episodes and palpitations for 19 years and the cardio work up shows everything is fine. It is scary, I get rapid heart rate, sweating, nausea. It can be pretty rough. I hope you can get in and get a healthy report.