question: Hi, umm I have a small ball in my knee like barely an inch away from my knee cap on the side and it s smaller than a bean but I can feel it like rolling around when I touch it or mess with it (moving it around) and it doesn t hurt. Idk what it is, I play volleyball 24/7 and idk if I did something to it or not and I have knee pads on too and I m not really on my knees a lot just bending them a lot. I was thinking about seeing the docter but I m not sure if it s really nessesary. Is it something serious?