Not Feeling Pain on Bruise?

So basically I’m a kid in grade 8 and about 2 years ago I was playing on a school playground and I slipped and fell on my lower leg on a metal pole and ever since I’ve never felt pain after the day I got hurt.
I don’t feel anything even if I pinch or poke a sharp object into the bruise.
Does anybody know why this is happening?

Sounds like you have damaged a nerve and it’s not responding as it should. You need to talk to a doctor about this. This usually happens after some surgeries. Have informed your parents? If not please do. Do you still have the bruise after 2 years?