I've hurt my knee
. I was cycling home tonight and my knee started to hurt above and below my kneecap. Only had half a mile to go so i carried on. Now that pain has gone but i have a sharp pain pin pointed on top of my knee cap!! What have I done? There is no swelling, just pain when i put pressure on, walking is ok but climbing the stairs really hurts and also if i bend it more than about 45 degrees or quickly. Is it serious? I need to be on my bike coz i ran over a big deer last week and i don't want to drive home in the dark coz i still feel really bad about it. need to be on my bike in 3 hours. 
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