I have hypothyroidism and hashimoto's. my current tsh is 0.01, t3 (liothyronine) is 169, and free t4 is 2.0. doctor is concerned. what could be wrong?

Too much thyroid: Most likely - the thyroid med you are taking is at too high a dose. Least likely- your pituitary gland which also regulates your thyroid function has totally failed. Too much thyroid can cause a lot of problem such as weight loss, heat intolerance, tremors, bone loss, anxiety , palpitation etc.

Strange: If you have hypothyroidism and not taking a thyroid supplement, it's not clear how come your TSH is that low. It should be high > 4.5 at least by some new norms > 2.2. Your TSH suggests hyperthyroidism unless you are taking a thyroid supplement and taking too much of it. I think you need to discuss it with your doc in more detail.