Hello! On my left year two years ago i fell bad on my left knee in badminton. It left an indentation on the right on my left knee cap and brused really bad and fast. It also messed some nerves i think because i would touch on part of my knee and feel a tingly feeling somewhere else on the knee. I didnt do anything other than ice it and take pain killers. Recently i have fallen on my knee a lot and got hit right in the knee twice in a soccer game. Ever since i have been having pain near the bottom of my knee cap and the indent is sensitive. I have something small but lose like maybe a bone near the bottom of my knee cap near my indent. Lately i have been limping and my knee constanly pops, has pain around and under the knee cap, hurts when running or walking and feels like it gets tight around my whole knee area. I can run on it but after running im in more pain. What could this be and what should i do?