I Fell Yesterday While Running And My Knee Got Really

I fell yesterday while running and my knee got really tore up, I quickly rinse the knee off from all the dirt and found a first aid kit and cleaned it in my knee with a alcohol swab I put Neosporin then I bandaged it up. When I got home I took a shower and in the shower I poured hydrogen peroxide and on my wound and After I got out of the shower I dried my wound and put Neosporin and have been letting it air dry. I did however put a Band-Aid on my knee last night so I wouldn't get blood on the sheets and since this morning after putting Neosporin on my knee again I noticed that my knee has been pussing all day long. Does this mean that my knee is infected or does this mean that my knee is healing?