I'll be praying for you. I have a lot of the same symptoms, mine are caused by AFIB, but I'm in my 60's, I do suspect though that Ihad it all my life, undiagnosed, until a doctor happened to pick it up on an EKG during a ER visit. I pray for strength for you, as you keep going through this search for answers. I do think the Mayo clinic would be the best option for you, as they treat the whole patient. Best of luck to you my dear!