Anyone hypothyroid and pg?

Anyone? Just started treatment for hypothyroidism, they think I have hashimotos disease? After 4 days on the medication, I feel so much better, not so tired, not so sick. But I am very worried, as they only started me on it at 9 weeks. I should have been treated a month ago at least to prevent damage to the baby. My levels were borderline low, so hopefully it will be okay.