Im really sick of when it gets cold my throat and mouth dry out when I sleep, does this happen to anyone else. The symptoms I have are, when I sleep I wake up from my mouth and nose being dried out, but I can clear my throat and spit up some brownish yellow mucus , and the same thing comes out when I blow my nose. But when im up and about everything is cool :? This tends to happen when the cold seasons comes about, can anyone help me out?