I fell on my knee while playing lacrosse a few days ago. I felt a deep pop, it did hurt at first, but than I walked away fine. Now I can hardly stand walking on my knee. The bottom left side of my knee (right knee) hurts when I bend or move it. The top of my knee hurts when I apply pressure to my knee by standing. I have been icing it and walking on it. The pain has been getting worse and worse. There is little/no swelling.