How to heal a blood graze quickly?

I fell of my skateboard yesterday and I've got this really large graze on my knee. It hurts really bad, hurts when I walk bend my knee :( it's a little deep in places... I have cleaned it and put this padding thing on it but its just made it worse. All I want to do right now is go out and skateboard right now because skateboarding is my coping mechanism for stress. But I can't! My knee hurts to bad, what do I do? I want it to get better fast and by the way I don't have any creams for it or proper bandaids for it and my parents don't care... I'm 14 girl btw

Also how can I stop it from hurting so much?