Day 9 Does anyone know what it means when your tongue is white?

I am really ready for the fast to be over...my dream of doing it for 20 days has long since vanished. I do intend to gradually come off the fast with perhaps a few days of other fruit juices and then raw veggies and fruits for about a week. But I have noticed that my tongue is very white. Does this mean I still have a lot of toxins in my body? If so, staying on a juice fast, even if it isn't just lemons, should still help clean me out yes?