Hello - and congratulations!
This is definitely an issue that you will want to discuss with your doctor, but keep in mind that the “normal” range for TSH is generally decreased during pregnancy. If your lab does not detail specific ranges for pregnancy, this document from the American Thyroid Association provides some general guidelines:(Note on links: if you click directly on the following link, you will need to use your browser's “back” button to return to the boards after viewing, or you will have to log back in to the forum. As an alternative, you can right-click the link and open it in a new tab or new window).http://thyroidguidelines.net/sites/thyroidguidelines.net/files/file/thy.2011.0087.pdf
The section on TSH is on page 7 of the PDF document (page 1087 of the original journal article).
Hope this helps – wishing you all the best!