I sprained my knee a week ago. I heard a pop and i felt alot of pain. I stood on it and started walking but it felt like jello. It got real swollen and i couldnt bend it. At times when id bend it id feel a great deal of pain seems like on the inside of the knee. A week later i can feel stiffnes still to it and it hurts to bend it. It feels slightly weak like it gives out just a tad when i walk not much. When i get in my small car it hurts trying to get my foot in the door. i can walk on it. i did not get an mri or xray done because i have no insurance. What should i do? It seems better since last week though.