About 2 months ago i got a blood bister tpye of thing on my inner cheek, it didn't get very big and one day it came off inside my mouth and bled like crazy. Now about a week ago it came back like a blood blister but this time it has grown to about the size a an eraser top, turned white and fleshy, it doen't really hurt but it is throbbing a little and there feels like pressure in my cheek. It looks like it is going to fall off at any time. Do you have any idea what this could be??