I ended up with two thyroid storms from
graves/hyper, NOT fun at all. I did the RAI, but the
graves/hyper was to far advanced for it to help me. I ended up having to have surgery anyway after the RAI.
My heart rate was 140 sitting down, my eyes bulged out, I was down to 88lbs despite eating non-stop. Trust me get it treated before it gets worse. Thyroid storms are not any fun...
But you can always get a second opinion from an endo if it puts your mind at ease.