I think I am finally mentally calming down. Thank you everyone for your comments. I am almost done with my first week with the Zio heart monitor and it is going alright. I have only felt a couple of flutters, but not anything major that would cause the stroke. Anyway, it seems the doctors have already come to the shrug diagnosis and are doing these tests out of an abundance of caution. Since nobody knows, the onus is on me to do everything I can. My goal is to lose a massive amount of weight in a healthy way. I have already dropped a good 15 pounds or so, but would feel comfortable to drop another 50. Anyway, fingers crossed and thank you all!