This is the second time I am posting this questions. I think I may be doing something wrong. Can you please respond to this question in an email? I have been recently experiencing heart fluttering which I used to have a few years ago. I had been tested: blood tests, ekg, echocardiogram, (halter monitor, event record which I didn't experience symptoms at the time) and everything was normal. I am not sure why I am experiencing these flutters again. Any ideas why they happen?