@johnhans I too thought I might not need my levothyroxine anymore and asked my PCP to order a TSH test. That was when I was cut down from a full tablet to a half so perhaps it's just too high a dosage.
JK

Please make sure u have it check reg ur not ever suppose to get off this meds as it control ur whole body ,I'm on it 8 years now stable and normal range as my daughter they took my daughter off of it dew to normal limits and withing a month in the hospital her thyroid level dropped and sad to say lost her baby 5 months pregnant as her body didn't function properly, u thyroid control ur whole body.