While running my knee suddenly got stained with a popping sound and severe pain. I felt something out of place but when I lied in my belly and folded my leg it felt like everything went back to its place. Then when I tried to stand I couldn't put pressure on my left knee as I felt like it was slipping away. There was pain for three days, I went to an ortho he told to take MRI after ten days. My pain is manageable but I have not tried doing too much with my leg except a few physio exercises. I wanted to know how severe does my injury seem. When should i ideally go for MRI. What exercises I should do till I get MRI.