Thyroglobulin creeping up

Had my total TT in 2018 followed by RAI in 2019. My TG levels went down to undetectable (>1)soon after RAI.

My past 3 labs have shown my TG levels starting to creep up slowly….1.3, then 1.42, and now 1.69

While it is still low, I worry about it trending up. Early last year I had a TG spike and it was 6.3. It ended up being that my levo dose was very very low which apparently can cause a TG spike. After it was adjusted it went back down…but it’s still just trending up slowly.

Anybody experience anything similar? Recurrence is mine, and probably all of our biggest fear and I just get so anxious and over analytical over my labs and TG test every time.