One thing I have read recently is that there is often a setback at six months. I cannot remember which post it was on. It is not permanent. Also, it surely could be an adrenal problem. I feel that I have had a worse a thyroid problem since removal, but after taking an adrenal quiz, I am pretty sure it is adrenal. Adrenal causes dizziness, faintness etc. esp right after getting up ie: out of bed, standing after sitting etc.