I woke up & my lip was itching & i scratched it with my teeth a few minutes later it was a big bump in the middle of my lip it was the same color as my skin then later that night it was gone but my skin was hard then my lip started itching again this time more toward the outer part of my lip i scratched it & another bump appeared so i pushed it & pus started to come out now it look a yellowish clear color what could it be