I think i might've seriously injured my knuckle. i slammed it against a brick wall and it was bruised for weeks and keep getting severely bruised. it feels moved to the left and juts inward.

You may have: a Boxer's fracture, otherwise known as metacarpal fracture. Your pinky knuckle is most likely to be injured, but any one of those knuckles could be fractured and displaced, which would explain abnormal movement and indentation. I would see a hand Orthopedist to get properly diagnosed and/or repaired. If left untended to, once scar tissue sets in your knuckle/joint would be permanently deformed.

See doctor: and have it x-rayed you may have a boxers fracture.