I had atrial fib in 2005, had a successful cardioverson done in 2006. I went back into Atrial Fib sometime this winter. I seem to become lethargic, tired, and depressed. The first time I went to the doctor he said he was sure I was fine, 3 months later I returned and told him I was not getting better, something was wrong, sure enough he listens to my heart and orders a EKG, I'm in Atril Fib once again. This time seeing a different cardiologist.