The last week and a half, I've been waking up with a weird taste on the back of my throat/tongue (not whole mouth). It's milky-sweet, but nauseating--makes me think of watered down, expired yogurt. If I snort & spit, I get about a tsp of phlegm, totally clear and mostly colorless with brown streak.
Spitting & brushing usually takes care of it, but it's back again in morning (and mildly after a nap).
I've been looking online, and based on what I've read, I don't think it is the following conditions. I'm just guessing on this stuff, so please correct me/guide me/offer more suggestions!
It's only in back of mouth & I eat carbs
It's sweet, and I don't have gas/burping/burning
I don't have congestion at night and so little phlegm in my nose/throat
I don't have a film or spots
Do you think it could be from having chewed sugar-free gum during the day? It kinda reminds of that aftertaste. Could it be my mouthwash? Can an infection taste kinda sweet? Could I have a really mild sinus/upper resp infection that's draining? Are there other symptoms for those other conditions that I should look for?
Thanks for any responses!