Thank you for your query.
I think you should consult a trichologist for complete evaluation.You can use minoxidil
5% topical solution for your hair regrowth which is an FDA approved drug for this purpose. But you should take thyrox
even if your thyroid functions are normal if you have been diagnosed with hypothyroidism
Hope you are satisfied with the answer.
If you have any further queries feel free to ask.
Wish you good health.