I've been on thyroxine for a few years now, I'm up to 75mg. I'm about due for a test to check where my thyroid levels are but I read somewhere recently that you should just automatically double your thyroxine if you're preggo. Not going to do that without drs advice but interesting. I'm on prednisilone too.
Usually hashi's and PCOS go hand in hand - have they looked at your resting insulin levels?