It hurts to stand on it?

My knee gave out. I was walking and suddenly the area where my knee is located had twisted the wrong way and I fell on it. It is swollen and pink and its when I put pressure on it. Should I get it checked or just keep icing it. What could be wrong?
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+1 y
Where my knee cap is located*
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+1 y
It hurts when I put pressure on it*
It hurts to stand on it?
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