Hilary,
A friend of mine's "low carb" plan was just to exclude breads, pastas, potatoes, etc. The obvious high carb foods. She has done great on it. I noticed from your profile that you are doing your own plan so you can be flexible. Have you read about different low carb plans? I'm on Atkins but as a maintenance once I reach my goal, I will probably go with Sugar Busters, which concentrates more on "smart carbs" rather than low carbs.
Good luck! There's so much information out there!!