I brush my teeth a million times a day it feels like. The flavor shows up whenever it feels like and I hate it. The middle of the night is worst because I have to get rid of it or I can't sleep. Brushing my teeth is only a temporary solution, same with eating, having a drink, chewing gum.
Blah I can't wait for it to go away! I heard it is actually quite common and people recommend sucking on something sour or eating things that are acidic but I can't get myself to suck on a lemon when there is already a sour taste in my mouth. Maybe when my husband wakes up I'll get some oranges and see if that helps.