I have had ongoing heart arrhythmia's for many years, and in the past 3-4 they have been getting progressively stronger and longer lasting. My whole body shakes with my heart beat, my left jaw and throat get tight and are aching, and most recently my heart beats started making an audible clicking sound with my latest 20-25 minute episode. A friend could actually hear it as well...My heart rate was clocked at 188bpm, although I am sure it may have hit 200+, but my iphone couldn't detect it for much of the episode. My chest ached, but now it is the day after and it is still slightly throbbing with my heart beats off and on. Before the onset of these palpitations, I had started to get a headache, and day after am nursing a migraine. The clicking looks like symptoms of mitral valve prolapse??? I went to the ER once when these symptoms were ongoing, but they can quickly come and go and they were unable to detect anything. So, I felt as though I was wasting their time and mine. Besides an overnight stay at the hospital, which I don't have the patience or the time for. It is very random when this occurs. Usually when I am completely relaxed, even when going to lay down for bed in the evening. I thought about going to the ER when this happened, as the clicking is a new phenomenon for me. What should I do??? Has anyone had anything similar and what did it end up being and how serious should I take this?