***coating on tongue...help!???***

geeez, what a nasty thing to have to talk about!! every morning (and many evenings) for as long as i can remember, i wake up with a nasty whitish coating on my tounge. does this really mean i have tokins in my system? what kind? what do i do? i know i should have looked into it more before, i just bush the you know what out of it and go on my way. i had a doctor tell me years ago that it was just "bacteria in my system" and was no big deal....well it is a big deal to me!!! and what does that mean anyway!

help!!

thanks Tweet