I'd say, better seek another doctor's advice. The exact same thing happened to my mother, with TSH rates shooting higher and higher, and indeed it was hypothyroid problems... but her former physician just didn't seem to find this worrying! >.<
Just a question here, regarding blood tests. I guess you're in the USA, aren't the normal values marked on the result sheets as well? (Here in France, they are; you get your result for each analyzed data, then on the same line the minimum and maximum values between which it's considered "normal". It remains and indication only, but it can help.)
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