Hello - I just completed my RAI treatment on Monday 8/6. I start my Synthroid this Monday 813, the same day I receive by Body Scan. I would appreciate hearing from others about how long it took to feel "back to normal" after going completely hypo. My biggest complaint is the exhaustion and feeling "fuzzy" or light headed. Boy am I ready for that to stop. So tired of feeling bad. Any information would help me stay positive! Thanks.