Hello, I have been having some issues with my tongue and gums lately. When I awake in the morning the tip of my tongue is sore then goes away then the sides of the tongue are red and sore now today all of a sudden the upper left gum and gums behind bottom teeth became red, when I rub my tongue across I can feel something and it s red, fine and rashy looking, doesn t hurt but naggy. What could this be?