Definitely check with your doctor and tell them you want to stay away from meds but are whilling to work on your doet, you could see a dietician? Protein is what you need most (like an above commenter said) and veggies and fruits actually have lots of natural sugars.
britt, you need more medical help than this. Were you a healthy weight at the beginning of this pregnancy, and you have gained virtually no weight and now you're not eating?
You need protein. Do you like scrambled eggs? Add some salsa and avocado too. Hamburgers wrapped in lettuce instead of a bun. A nice steak. Almonds are some of the highest protein nuts. Focus on a vegetable and a protein at each meal if possible. I'm sorry you're having to deal with GD! I hope you're feeling better soon!