I am 30 years old and was diagnosed about a year ago with hyperthyroidism. I've had the radio-iodine test done and it showed I had a nodule about the size of a pea on the lower lobe of each side of my thyroid that is causing the hyperactivity. I just had my blood work done again and my TSH is 0.019 and the doctor wants to do another radioactive iodine test again. I'm very confused. I've had symptoms for many years such as being extremely hot natured, heart palpitations, heavy breathing, tremors, etc. But one big difference is that i'm overweight and my doctor doesn't want to do any treatment because he's afraid I might go hypothyroid and gain more weight. Anyone else with similar problem?