I've been playing volleyball for about 7 weeks now and for about the first 3 weeks I had had a bad pain in my knee when going up and down the stairs at school and sometimes when i would get up from my chair. But about 2 weeks after the pain started, without any treatment or rest, it died down and now there isn't any. so, im wondering if i had Patella pain syndrome for a while and then it healed itself or if ive injured the knee more???