Do you think you could give us the actual numbers, please, with the ranges? Just saying high or low doesn't really tell us very much.
What was initially tested? Just the TSH? A low TSH on its own doesn't automatically mean you are hyper. It's high FT3 that means hyper - the TSH is low as a consequence.
If you had low TSH with low FT4 and FT3, then it could be a pituitary problem, rather than a thyroid gland problem. But one would need to see the actual numbers to understand.
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