Hi, I'm 7 weeks pregnant. I'm on T3 and T4 treatment. I have secondary hypothyroidism, the cause has not been established but my body does not produce adequate TSH. My doctor is not taking me seriously and seems unaware of the dangers of low thyroid hormone levels in pregnancy. I pushed for a blood test at 5 weeks and my T4 is 9.8 T3 5.6. I don't think this is ok... T4 range in the first trimester varies by were you look, but is always over 10. My normal T4 is around 14. I've recently moved so my doctor cannot see what is normal for me. The doctor is saying I'm within normal range. I'm worried having done my research. what can I do? who can I turn to?