I have no thyroid, my TSH is low and my T4 high. They have just reduced my levothyroxine, they say I have hyperthyroidism but I don't have any symptoms to suggest that. I feel really well. I'm worried I will land up being hypo and gain weight. As it is I have been struggling to lose weight. Should I ask the doctor to test my T3? And should they be doing regular blood tests as they're mucking about with my meds?