I was diagnosed with lone AF this time last year.
I woke from sleep with an irregular heartbeat and thought it may have been anxiety. But my symptoms grew increasingly worse and after a few hours my heart was pounding in my chest and leaping and flopping wildly. I thought it would pass, but when it didn't I decided to go to A+E where I was diagnosed with AF.
The doctors offered me a cardioversion but I was too scared and ended up having Amiodarone. I reverted to NSR 12 hours later.
I have been on Diltiazem ever since.