No dx here but I have somewhat elevated TgAb and higher heart rate (it definitely fluctuates). My very brand new doctor (Internist) is suspecting thyroiditis. Some resolve, some move onto hypothyroid.
My FT3 & 4 according to many patients, is considered on the low end. However, in the "normal" range.
That said, I am a smoker and as such, this tends to raise the heart rate a.k.a. "smokers heart." My B.P. can spike as well. Further, I have elevated Testosterone & Dhea-s. Perhaps all of this accounts for what I have been experiencing.
~Kate