Somthing is wrong with my knuckle please help?

it could still be swollen. or you could have pushed the knuckle out of its joint a bit when you hit the wall. is it painful at all when you open and close your hand, or make a fist, or when you make any movements? it may just take an extra while to heal. these things don't get better in a short period, it takes a while. if you notice that moving it is starting to get really painful, then it may be out of joint and you need a doctor to put it right again. otherwise, just take tylenol when needed, and give it time to heal.