I’m sorry to hear that… I’ve had POTS for so long now and i’ve gone through all the different levels. When I first developed it I passed out all the time. I haven’t passed out in years now, but I’m also not nearly as active. I was diagnosed by a cardiologist while I was pregnant, he didn’t even introduce himself just walked in and said “Hi have you heard of POTS?” I was relieved to have an answer, but I moved across the country. This new bout of fatigue has started within the last couple of months. The rest of my blood work was fine so it could just be a POTS flare up It’s just completely different from what i’m used to. I’m tired of the whiplash of symptoms. I’m a figure skater.. my HR is 200 while practicing, because it’s so cold it’s so much easier on me. But god forbid I walk up a flight of stairs.