Do you have Hashimotos Thyroiditis? In my opinion, it seems to make the thyroid be a bit erratic…..symptoms really seem to fluctuate. I think the recommendation for taking medicine is to bring down the TSH number which is supposed to lower the risk of cancer regrowth while bringing up your T4 and T3 so symptoms should improve. If you deal with a lot of issues, the medication might stabilize your symptoms. It certainly seems like it might be something to try….getting stabilized on medication can be tricky, however if you keep a symptoms journal it really helps to see trends. Good Luck!