When to worry about that bit of drool that wakes you up

By Sandee LaMotte, CNN (CNN) — The evidence is irrefutable — a pile of drool atop a drenched spot on your pillow. As you awake with a start, you might even wipe that bit of spittle still dangling from your mouth. Drooling can be embarrassing, especially if you’re waking up to a newly minted lover