Thank you so much for your answers. It is so weird to wake up with the tongue stuck to the roof of the mouth! I was thinking maybe I'm sleeping w/the mouth open, but it doesn't make sense that I would breathe with my mouth if the tongue is stuck to the roof, right? Cuz that would block the breathway and I would probably breathe through the nose? I am so confused about what is happening. This just started a couple of weeks ago after I recovered from a head cold (and during that time, I thnk I over did the sudafed). My sinuses are not infected but they are a tiny bit congested. Anyway, thank you again for your help and I will look into those questionaires.