AF is not acutely dangerous but you do want to maintain the aspirin per the doctors instruction to reduce the risk of a stroke for now and ask the doctor about switching to anti-coagulation meds. Because yours is paroxysmal AF, it is hard to correlate it to anything else including strep. For some people, there are triggers such as caffeine, alcohol, hormonal changes, etc ... Also, endurance training could trigger remodeling of heart muscles and some will develop AF from excessive training. Anti-arrhythmic medications may help but majority cannot handle the side effects or the meds just lose effectiveness over time. The important thing is not to let AF progress into the persistent form when you have to be cardioverted back into rhythm. Give meds a short leash and find an electrophysiologist that is skilled at ablations and do a high volume of AF ablations in case you need to go that route.
Thanks, I have a follow up with my cardiologist on Tuesday. I definately am not in any kind of endurance training, lol, I could stand to lose a few pounds, and if I do, I may be able to say goodbye to my blood pressure problems, and then just be on rate control meds for the Afib (which I am hoping is due to strep and never comes back!!!). I have already started looking into ablations in case I need to have them, because I will certainly not live with it forever. I can't stand it to be off beat at all.