Is my leg messed up for good?

Back in March some idiot tripped me while running in gym class. I was in a group of 6 friends and was running as fast as I could. I fell 3 feet forward and slammed down really hard. I couldnt feel my knee instantly. Me being an overdramatic drama queen (on the surface..) with a VERYlow paint tolerance, nobody really gave a crap and just thought I was making a scene. So my friend Brandon and boyfriend Luke helped me up. but when I couldnt stand and started blacking out they got my gym teacher. Course, she called me a baby, hit me and sent me to the nurse for ice. I had a black and blue bruise covering more than my whole knee. I had to sit out gym for 3 days and couldnt kneel on that knee for 3 weeks. The pain is gone if you touch it. But I still cannot kneel and there is still 4 bruises on and around my kneecap. Is it gonna be messed up forever? Its been 3months and still hurts and still has bruises. Will it heal =/ My moms leg has gotten run over by a bike and it wasnt even this bad o.o