Anyone has info on what to eat after being told you have gestational diabetes?

I went to get some reoutine bloodwork and the nurse said my body is not processing glucose the way it should. I am only 8 weeks pregnant and my appointment with the specialist is for next Tue. I am concerned about what I should and shouldn't eat. I have always been pretty healthy but I guess being latina, over 35 and a few pound over weight placed me at risk...