about a month ago I hurt my knee, I twisted it and it made a popping noise and hurt really bad, I had a emobilizer, got MRI's X-Rays and they said they found some fluid in the knee but nothing more, no torn ligaments, nothing, so my knee still hurts till this day, not as but yes, and it swells from time to time, it's stiff and just doesn't feel right. It hurts on the inside and top of my left knee, what's wrong with me doc?