Welcome Becky! I use to live in Boise a few years ago.
As to your question:
Your body is detoxing, to an extent. For 3 - 5 days (on average) you will feel like that. For the next week, you will feel fantastic and then crash, energy-wise (again, this is on average).
Your body is adjusting.
Just keep at it and listen to your body. If you start to feel shaky, queasy or have low energy, then up your carbs in the form of more leafy green veggies and some berries or other fruit.
Hang in there!