small bump on roof of mouth

hey everyone!

i've had a strange dental history, but this thing takes the biscuit, i've had two tooth abcesses in my life, the first one i foolishly disregarded and took anti-biotics, which seemed to cure the problem.. the second one i had extracted as anti-biotics didn't work.

the first tooth however is now very black, and a year ago the pain came back, after two years of nothing, it hit me like a train...
i took strong paracetamol and eventually the pain faded away, however i was left with a long bump along the roof of my mouth, i actually felt it form, i pushed my tongue up to try and ease the pain, and the bump pushed through, days went by and the bump decreased so i assumed it would go away naturally, but a very small part of it is still there.. you can see that it is alligned with the bad tooth, and i'm sure it's just a small part of the abcess which hasn't dissapeared or something, (obviously i plan to have it extracted soon)
but with all the scres of oral cancer, i can't help wondering...

does anyone have any ideas??
(p.s, i don't feel any pain from it anymore at all, i used to push it with my tongue and i could feel a light pain in my tooth. but this has since gone away too)

a reply would be greatly appreciated,