Not a doctor don't play one on TV nor did I stay at a Holiday Inn last night. These are my experiences. Sorry in advance for the novel.
AFIB is a pain in the butt as you never know when it is going to start and when it is going to stop. Some people don't even notice they are in AFIB. In my case I feel every premature beat and AFIB is/was very noticeable. Having said that it never stopped me from doing ordinary things I wasn't going to be running a marathon in AFIB but otherwise it was tolerable. I am on Basic Med but essentially did all the same tests the FAA would have required Holter/Stress (already on CPAP). They say AFIB begets AFIB for me it started out occasionally and then started happening more often so I had an ablation April 1st of '22. Since then while I still have the occasional premature beats I have not had a recurrence of AFIB. The ablation was pretty easy peasy but it isn't without risk. There are some new technologies that are coming online that have better tissue discrimination and less risk of collateral damage.
Now to the more practical things.
AFIB can be scary but in and of itself it isn't going to kill you (see comments on stroke below) one of the hard things is deciding when to go to the hospital. Obviously you have to decide for yourself but I only went to the hospital the first time. My thought was if I got close to 24 hours in AFIB I would call my cardiologist and discuss getting a cardioversion. I kept a log of every time I had AFIB when it started, when it stopped. Sometimes it lasted a few minutes the longest was almost 12 hours.
At least for me and for many I have read about it tends to start more at night. Sometimes laying on my left side would trigger it. There are other triggers too some people have mentioned food, alcohol, caffeine, over eating and some medications. I tried all sorts of things to make it stop when it started. Sometimes it worked sometimes not. The vagus nerve can be involved so they say stimulating it can help. Here are some things I tried to varying levels of success...try drinking ice cold water, try gagging yourself, try raising your heartbeat (seems counter intuitive) but this worked at times, try changing your position (lay down, stand up). You can ask your doctor to prescribe you a pill in the pocket (one you take when in an attack) like metoprolol. This can help but for me was hit or miss and I had a slowish resting heart rate to begin with (high 50s low 60s) and I hated how I felt when I took it (it lowers your heart rate) and occasionally had heart rate dropping into the 40s. As a side note my heart rate went up after the ablation (mid 70s now was 80s shortly after) which studies have shown is an indicator or success.
The big risk from AFIB is stroke. Research CHADVASC score and you will have a better understanding. Blood thinners may be prescribed. I was only on them prior to the ablation and then went off them 3 months after. I took Eliquis there was no way I was taking Warfarin and doing all the tests that go with that. There are programs where you can get Eliquis fairly inexpensively (
https://www.eliquis.bmscustomerconnect.com/afib/savings-and-support) so don't get sticker shock when you first see the retail cost. Stroke risk can be associated with blood pooling then clotting in the left atrial appendage but AFIB from my research also seems to be not unlike high blood pressure an indicator of elevated stroke risk in certain people. I was leery of taking blood thinners as my brother died from a brain bleed on Warfarin but honestly I really didn't notice a big change with clotting on Eliquis it just took a little longer but not excessively. I would imagine when I get a little older and my CHADVASC score increases my cardiologist may recommend blood thinners again.
Best of luck to you. It is hard not to worry when it is your heart. Before my ablation I thought about AFIB all the time and stressed about going into it at inconvenient times. Now a year later the only time it creeps into my head is when I have the occasional premature heart beat but then the thought passes pretty quickly. If it comes back again I wouldn't hesitate to have another ablation.