ang, it is a bit odd to hit a plateau so soon, though it does happen. Perhaps you've added in too many starches or fruits? Try posting a daily menu for us, okay? I started with three fruits and two starches a day when I did Phase 2 (bad call!!!) and only when I got it down to one of each did I start losing. You may have to play with these to see what happens.
Have you added exercise yet? As Jenn mentioned, it helps immensely, especially in breaking out of plateaus. If you are exercising, try a new type of workout or vary what you are doing somehow. Make sure you get your water. Change how much or when you are eating. Changes here and there can jump start you back into where you want to be.
Good luck!