Thyroid condition while pregnant

Does anyone have a thyroid condition while pregnant? I'm 5 weeks and about 2 weeks ago I found out my thyroid antibodies were through the roof but all normal T3, T4, TSH. I was put on Synthroid 50 mcg daily. I've been on it for about a week and had my levels drawn

yesterday, and now my T4 and TSH are out of range. My TSH is lower at 0.80, and the T4 is higher at 19. I'm concerned because the TSH needs to be at about a 2.5 during the first trimester. I've contacted my doctor for advice, waiting on a response. Any advice would be great.