Hi! Last Wednesday, I was running on my local high school track, but when I finished I began feeling pain on the outside of my knee and a tingling sensation in the bottom of my foot. I took a day off from running, and then ran again, but this time the pain in my knee was sharp and I couldn t continue. The next day I woke up with swelling and bruising. I then took off from running for 4 days and began running again today, but I am still having the pain. What could be causing my pain?