Hospital records questionable. is it possible to have a tsh of .02, then tsh 5.56 two days later? symptoms match readings both days. but is this even possible, or is one of these likely wrong? my understanding is tsh won't change that fast?

If you were hospitalized, you may have had a condition called euthyroid sick syndrome when the thyroid function tests are abnormal due to your acute illness when the function of the thyroid is indeed normal. So, when the thyroid tests abnormal in the setting of acute illness, it is often repeated and the repeat test is more likely to be accurate. Once you are completely recovered, repeat the tests

You are correct unless you are taking something with biotin in it which can affect assay. I know of no symptoms that match TSH levlels. Did they put you on hyperthyroid meds between times. Recommend repeating. Possible samples mixed up??