Bilayer-quad tendonitis (knee)

hey…i’ve been having a great amount of pain in my knee above theknee cap on both knees for the past few years…it hurts so bad and i am on 2 varsity sports teams seasons one right after the other..almost everything hurts it and when i barely bump the top of my knee cap on something..it hurts really bad…i have been to the doctor and they had me go to physical therapy and that really didn’t help me at all..i have 600 mg of ibprofin that i am on but i just want other peoples advice on what to do..i feel like i’m 80 in a 16 year olds body and i hate it..please let me know

thanks
krissy