I ran a marathon two weeks ago, my knees were feeling fine but after one week from not running after the marathon, I decided to run outside. While in my marathon I had felt a little pain on my right knee on the outside of the knees cap, but now it hurts more. I had this problem 2 years ago when I entered a race of 6 miles, I don't know what happend but it strted hurting while I was in the race, but I was able to finish the race. This time in my marathon I also finish the race, even though at the 20th mile I was feeling the same pain as 2 years ago. What can I do? I am using a knee brace since my first time in the 6 mile run. I have been feeling good but until that marathon and that outside practice run. The pain is on the outter side of my knee cap, could it be a stretched out ligament? And wat can I do? When i move the knee whilesitting down, up and down it feels as it pops a little and the outside of the knee cap looks a little lifted or swollen....