Why Does this Scrape Keep Burning?

I was at a drive in yesterday and my friends and I were playing football and i was running to catch the ball and I fell on a rough patch of grass and got a nice sized scrape on my knee. It wasnt even bleeding badly. It bled like one small drop. I used wipes and washed all the dirt out and then put antibiotic ointment on it, but it still hurt really bad the entire movie. I came home and poured hydrogen peroxide on it and then some burn stuff called bactine or something and put antibiotic ointment on it and covered it up with guaze. I went to bed without pain and woke up and it had a scab but it hurt and burned to move my leg. I treated it the same way but it still really hurts. I've had scrapes on my knee before, but they've never hurt this bad. What's wrong with it, and how can i numb the pain and treat it?