My tongue is sore & I've noticed I have a small flat black spot on the top near the back. Has anyone had something similar? I am already waiting to see consultant for reoccurring ulcer - deemed non urgent so GP obviously doesn't feel it's sinister - don't know if the back spot could be connected &/or is cause for alarm - any advice? Appointment with consultant is on 3 Oct so minded to wait until then & hope it goes away