I dont have any answers, but I am wondering the same thing. I started my period right as I started the MC. It came as usual, but by the second day it went away pretty much. I've been barely spotting since. I'm ending day 5 now. Strange huh? It will be nice to know if this happens to other women as well. I'm also not preggo in any way!
About the coating of the tongue..gross huh. Mine is that way too. Cant wait for it to turn pink again. Your tongue being slimy and white means that you are releasing toxins. Not sure about when it turns pink again. I'm guessing its varies from person to person.