Hyperthyroidism Questions!?

I'm 16 and was diagnosed with Hyperthyroidism 2 years ago. I had gone from 110lbs to about 150lbs in a matter of months (Because my doctors had given me medication to stabilize me, but ended up making me hypothyroid by over doing it) . I had been working out alot and gradually losing weight. I think I weigh about 129lbs now, but I'd like to keep losing weight. I realize that I can only eat certain foods and no iodine. Does anyone have any tips to what will help me lose weight and what is okay for me to eat? Also, after 2 years my throat is still a little swollen, will that ever go down?