Stress is not good for Hyper/Graves
' and will bring the disease
to the forefront, that is, out of hiding, and also will make symptoms worse, as well as smoking, and is bad for TED (thyroid eye disease).
You stated that your are being treated for hyperthyroid? Which I assume you are taking ATDs medication. So that would explain normal levels. However, if you are not being treated as yet and levels are normal, then you do not have thyroid issue.