Hello and welcome! We are fellow patients here, not doctors, but I would definitely make sure your doctor is familiar with the latest guidance from the American Thyroid Association that covers thyroid issues and pregnancy:
http://thyroidguidelines.net/sites/thyroidguidelines.net/files/file/thy.2011.0087.pdf
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The section on Graves’ starts on page 1094 of the original journal article (page 14 if you download as a PDF). There is also a section that recommends specific TSH levels by trimester, which are different from the standard “normal” range. (Page 1087 or p. 7 PDF). Since TSH levels can often be suppressed during pregnancy, it’s important for your doctor to be aware of these updated ranges and to monitor Free T4 and T3 in addition to TSH.
Also, make sure that your doctor knows to test antibodies, as the involvement of a maternal-fetal specialist is recommended if antibodies are extremely elevated at the 24-28 week mark.
We have had many women over the years who have had healthy babies while taking anti-thyroid drugs, but it’s definitely important to be aware of the latest medical guidance.
Wishing you all the best!
