I have a bump on the inside of my lower lip only painful when rubbed against my tooth no discoloration any idea what it could be?

Fibroma: That's a guess. See your local dentist or oral surgeon to find out for sure.

Fibroma: Frequent rubbing,biting on and area can cause a small growth. These are usually harmless but can be irritating. The only way to,learn exactly what is gong on in your mouth is to see a dentist for an evaluation

See DDS: See your dentist for a clinical examination to determine the causality. Is there a history of trauma to the area? Possible mucocele, but have it checked out if it doesn't go away.