Splink, the best advice I can give you right now is to just avoid all baked goods right now, especially the gluten free ones. I know it's hard, believe me...but I managed to go a couple of months with nothing except brown rice pasta and quejos as the only things even slightly resembling gluten. And even then it was only after a month and a half.
The hardest thing is getting over the cravings, but you will. I feel a lot less stabby when someone starts talking about a fresh baked lemon yogurt cake. It takes time and patience, and if you just can't stand it anymore, have the cookie and hust see what happens.