i really don't now since i have no way of seeing this lesion and examining you. a vague description really isn't sufficient to make this important diagnostic call so i suggest that you see your medical provider or even dentist to have this "bubble" properly identified.
i have a bump underneath the tip of my tongue. what is it? . i have a sort of bubble like thing underneath the tip of my tongue. it is red and sticks out a good half inch. it is very tender and hurts when it is squeezed. if you look closely at it you can see a blood vessel. what is this?