Nancy! You've read the book, right? If not, you really, really need to. This diet relies so much on your ability to see how your body reacts to food after learning about things from the book that if you don't read, you'll be lost.
That said, congrats on doing so well! If you've been eating healthy for a while, this might not be enough of a change for you to cause problems. Just make sure you get water, eat good carbs (bell peppers, tomatoes, beans, dairy), and take it easy in P1. You'll do great!