I get these episodes that come and go. Could be days, or weeks in between. It usually starts off with feeling very tired all of a sudden, then lightheaded with tunnel vision. A lot of tomes when this happens I will also get 1-5 skipped or fluttery heart feelings which take my breath away. I have had a holster monster which was normal, my stress test was normal. My echo came back saying I had diastolic dysfunction, and trace regurgitation in, I think 2 valves. I've been told the diastolic dysfunction doesn't really cause symptoms. Any ideas to what could cause these episodes?
Also, I am 28 and female. With a history of anxiety disorder.