When I get up, i always have to sniff and LOADS of flem comes up into my mouth. !
Question: You are a smoker. Quit smoking.
Answers: You are a smoker. Quit smoking.
My guess would be ALLERGIES and/or Chronic Sinus Infection.... it causes musus to drain into the back of your throat while your sleeping and becomes thick and nasty. If it is really bothering you I'd try some mucinex, or Go to the Doctor!!!