Tsh 3 in nov 2014 & 0.05 in jan 2015. sleep disturbance after starting synthroid (thyroxine) 88mcg. tiredness. sad. am i overdiagnosed with hypothyroid?

Yes, over diagnosed: Hi. Based on what you've told us, there is no reason to suspect you're hypothyroid. How long have you been on the l-thyroxine? It is most likely you have no thyroid disease and are being treated with l-thyroxine needlessly. Are your thyroid autoantibodies positive? Even if so, decision to treat is based on TSH and free T4. Good luck!