Hello -
Well your
TSH is so high there's every likelihood you have
hypothyroidism, and very probably a virtually non-functioning thyroid. It isn't normal, which is why you've been put on thyroxine. This, combined with the symptoms of fatigue you describe fill out the typical picture of new-onset
hypothyroidism.
Thyroid disease and dysfunction can often run in families and the malfunction isn't always the same one from person to person (one may be hypo- and another hyper-, etc.).
I would advise you to go along with the attempt to regulate with thyroxine until you are able to be seen by the specialist, who may be able to regulate the dosage more accurately. If you develop any unpleasant symptoms such as flushing, uncomfortable warmth,
rapid heart rate, etc., please advise your doctor right away so he can adjust the thyroxine doseage. On the other hand you may find yourself feeling a lot better after a couple weeks on the replacement therapy.
Best of luck to you. Please follow up with us as needed.