Hi. Yesterday I was photographing a wedding and I kneeled down and as soon as my knee hit the ground I had a severe pain just below my knee. It felt like I was kneeling right on my bone and something was stabbing it. I got up and seemed okay. About 30 minutes later just below my knee started to throb and swell. I now have a lump about 2 inches below my knee cap and it is swollen and extremely painful. It is warm to touch and slightly red and bruised. It is very painful to bend my knee and it hurts to walk. Could I have torn something or broken something? I’m very worried as I am a very busy wedding photographer. Please help. Thanks.