I have Grave's Disease and after having radioiodine treatment have hypothyroidism. I only thing that I wanted to add is to be sure to let your doctor know how you are feeling when the adjusting/changing your medication. I was put on 150mcg of Synthroid and my TSH was within normal limits. I had palpitations, sweating, anxiety, etc. I had to tell my doctor three times in a row that the dosage was too high and my symptoms were not subtle. I am now on 125mcg and my TSH is on the low side of normal. I would have been miserable for years if I had kept my mouth shut.
Sarah