Afib can come and not return for months or years, I believe that is paroxamal and it converts on its own. Then there is stage when it is more frequent, and then permanent. When I went to the ER for my first bout I was told about a patient who'd had it 20 years before at a time of great stress and had just come in with it again at a very stressful time. I went 7 years between bouts and then had a couple, still resolving on their own, then 10 months ago I had 2 bouts 4 months apart that had to be electroconverted. I was on Atenolol for those 7 years. I am now on Norpace XR and Warfarin. My doctor is going to take me off the Norpace (anti-arrthymic) after one year with no Afib. I want to get off of it because it has side effects of dizziness, no stamina and it's hard to get my heart rate up with exercise. I take 100 mg. twice a day, a very low dose. I have retired and am under a lot less stress, so I may give it a shot. If the Afib comes back, I can decide then if I want to try another med or consider ablation. Hope some of this helps.
Any amount of AFib puts one at a higher risk of clots/stroke. The lowest level of clot risk reduction is aspirin. If you are not on at least a low dose aspirin, it is something you may want to discuss with your doctor. The general advice is don't take aspirin for more than a few days without consulting your doctor. Not sure why that is, another approach might be to consult your doctor if taking an aspirin every day causes some side effects.
I take a low dose aspirin every day with breakfast. That puts it down with some milk which coats the stomach. I have had no stomach trouble. I also take warfarin every night at bed time, I am in permanent AFib. I have an enlarged left atrium, so there isn't much that can be done to cure my AFib.
It is generally agreed that stress is a drive to heart rhythm abnormalities, and relief from stress can return one's heart to normal rhythm. Good luck, keep the stress as low as possible.