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.
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.