I think I did some damage to my knee playing hacky sack, will it ever go away?!

When I hack, my favorite trick is the clipper stall. That's where you stall it on the inside of your foot, behind your other leg. It requires bending your knee and ankle kinda awkwardly. I can only do it with my left foot, and last night I discovered that my left knee pops when I stand still and bend it, as long as theres pressure on it. I'm positive that my knee pops because of this trick, because i do it all the time and it's only my left knee that pops. If I stop doing it, will my knee stop popping and fix itself? Or will it do it forever?