Hi MeeMee, welcome, I know how you feel, I have been down that same road, but was hospitalized because my heart rate was at 180 bpm. I was diagnosed 12/6/12 and had RAI on 12/14/12. I am 8 months post RAI and went hypo in April, and am currently on 100 mg of Synthroid. It is scary, and you found a great place to help you with your anxiety and fears. My best advise is to read, read, read, I read everything I could on Graves Disease, ordered books and read some more. I keep a journal with all my lab sheets in it from my endo along with a list of questions and his answers each time I have bloodwork and a doctor visit. Knowlege is Power!