Hashimoto's and TTC

So I was diagnosed with Hashimoto's after my first miscarriage. Recently, my TSH went from 2.5 to 1.5 after taking Synthroid for a few weeks. My Dr. said TSH levels should be below 1 when you're TTC. Anyone know the connection between TPO antibodies and TTC? I know there's a lot of research about TSH levels but what about antibody levels? Mine were in the 200's. Anyone with success stories TTC with Hashi's?