Thebest way to know if you are in a-fib (or in and out and do not realize it) is an EKG.
What makes you think you have afib?
Unless you are symptomatic with a BP of 90/60, that is perfectly fine. If you are symptomatic, talk with your physician about trying a different medication.
I'm also inclined to think the stroke is a result of the BP patch. Of course, you may never know for sure. Not worth risking it by trying again.
If u were on the birth control patch, I would feel positive that is what caused your stroke. Have you ever read the studies on that? The incidence of stroke with that medication is outrageous. I can't believe it is still on the market. I wish you the best.