Lately I have been having a "heavy heartbeat" not fast or fluttery. It has just been very heavy like i can feel it in my chest. I dont know if it's anxiety or some side effect of gerd but it is very scary. Again i have had 4-5 ekg's 4-5 xrays, 4-5 blood work, 4-5 urin work and an echo cardiogram and 3-4 doctors tell me my heart is fine. Well doc's it sure as hell doesnt feel fine