High TSH effects over baby in Pregnancy

Patient: I have 11.8 TSH level with T3 2.1 and T4 105. I am 4 months pregnant. I have just started medication on the same. Is there any chances of my baby getting less brain development or any other fallacy due to this late start on medication? What are the possible effects of TSH high on my baby? Is it curable? Debabarna M.