Anything that hurts the knees, you leave them alone!!! Osgood Schlatters ( check spelling ) could be an issue. You do tend to outgrow it; that doesn't make you feel any better. Patellar tendonitis can be a mystery too. If you can triple jump without pain…….that's the big deal.
In the mean time, solid core work, ankle flips, hip flexor work – these are critical for good TJ performance
I've had four knee surgeries, none of them minor. But, I'm from old school; I do a great deal of my coaching to enhance positive work and not beat the hell of an athlete's body.
At 17, you might have some big jumps ahead of you. BE PATIENT!!! take it from an overachiever who beat himself in the ground. More is seldom better, Tune into your body; if you can clean or snatch w/out pain and technique is good – you are still doing the right thing. gotta' get to practice. peace, cg