I was working and i hit my kneecap on metal on sunday. it started brusing Tuesday, below my kneecap, there is swelling and bumpiness. and a random bone bump. my kneecap, there is a big dip where i hit it and i can move little things around inside. there is a huge bump that i can move to. when i move the kneecap, it feels like rubber rubing together. it hurts the more i walk and when i go up and down stairs. i have a strange pain in my upper caf, and i get tense stinging pain at times when i try to run. what should i go and what would you think is wronge?