How bad was your score? My ob said for the 1 hour if it was 200 or over they automatically say you have GD because that's way high. I don't know how you had such a high score without a past history of problems. Hmmm...
Oh, there's a GD board in the high risk pregnancy forum. I'm there because I've been doing my glucose testing (I was borderline diabetic before pregnancy, don't know if I have GD yet) and being a hemophilia A carrier. They can point you in the right direction and the internet is full of help for diet and recipes and other things.