Even though I have hashimotos, I haven't been on syntroid before. Last week at my 10 week appt, I found out my TSH is 9 so they started me on 0.125 of synthroid to hopefully get it under control quickly. The doctor I saw said it was reassuring that my free T4 was in the normal range still as this is the hormone that circulates in your body and what affects fetal brain development, not the TSH.