I remember that feeling of coming off the MC. I went for 24 days and my tongue didn't clear either. No sweat, I think it has to do with the amount of toxins that are in our bodies. I did notice however, that on days after the middle of my tongue got a little pink.
I too was nervous about gaining the weight back. I lost 20lbs and I am still on the overweight side. Since they recommend drinking the OJ or lemonade for breakfast and I read somewhere in the MC book that our body cleanses from 12 midnight to 12 noon, I thought that would be a good reason not to eat anything. I kind of go further with it also. I try not to eat until I get home. It works well when I make a smoothie for breakfast and lunch. I am not too hungry on that.
It's been 3 weeks and the scale has been going up and down but no more than 3 lbs added. This morning I am back where I lost the 20lbs. Try it.