No jokes this time. During football practice i got pushed. With the force that hit me, i dropped to the ground and bruised my knee. The bruise/wound was bleeding, it was also dirty (due to the ground). I got some water and cleaned it up, after that, i put a damp towel over it (no disinfectant). A few hours ago we returned home with my friend (call him deprssed-anorexia if you may) i removed the towel, it started to burn and badly hurt. I didn't want to put disinfectant on it, because of how badly it hurt, my friend however managed to violently clean it up again (since i couldn't do it because of the pain), and so i left the wound alone so it could breathe. Now it's starting to swell and burn really badly,and i don't know what to do. Should i go to the doctor or should i just bite my tongue, apply the disinfectant and hope for the best?

I don't want go to the doctor because it's nighttime.
I don't want to use the disinfectant and properly take care of my wound, because it hurts too much when i make the slightest contact...