What is wrong with my knee?

My knees click all the time, and I can feel them sort of crunching when I place my hand on them. I also experience a dull sort of aching in them at times and I also get pain in them when I run. This is a problem as I am still in high school and I have to do 1 and a half hours of physical education a week and also have to run for the bus a lot!!!!!! It's getting really annoying and painful now so any ideas you have on what might be the problem would be greatly appreciated. Thanks.
Anonymous User
Anonymous User
Asked 5 hours ago

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