Hi...I fell hard on the sidewalk on my right knee cap and I immediately had swelling and a large amount of fluid on top of the kneecap. I was not able to bend my knee at all. I elevated it for several hours and put ice on it. I tried to get up and my right foot turns dark blue and the veins stick out and start to swell immediately, the swelling i n the knee returns immediately even though it goes down a little bit with elevation and I still can not bend it. Is this just a bad sprain, or does it sound like something more. I'm a nurse but never dealt with orthoped. issues this doesn't seem right, but the swelling abatement with the elevation is somewhat reassuring. I am continuing to elevate it and ice it but every time I get up the symptoms return and the pain is unbearable.