I can't advise you about that as you need as much normalcy in your life as possible when under duress, which it seems you are when fibrillating. Perhaps more rest, less exertion, is the best, maybe not. You do not want to encourage more AF if you can help it as the disorder is generally progressive; AF begets AF as saying goes.
Are you on an anticoagulant? If your AF lasts more than a few hours, and happens often, I would think a cardiologist would insist that you should be prescribed one.