I Am A 15 Year Old Teen Female Whose Had

I am a 15 year old teen female whose had knee pain for about 4 and a half years. i had osgood-schlatter for the first few years then my knees never got better. they kept hurting and then i injured my meniscus in one knee and now i can't go one or two days without knee pain? I have knee pain in both knees. I am a gymnast that only works out 3 day a week (10 hours). My knees always hurt at practice even though i ice and always take ibuprofen. what do you think is causing my knee pain?