Hit my shin, but no bruising...?

Hi there. I recently just got back from kickboxing in which I hurt myself. During our sparring match I went for a power house kick to his ribs, he blocked with his elbow, in which I came in full contact with. I went down and was out for the rest of the matches. Now this is the weird part, there's no bruising, there's a weird type of tingly pain, and I can't walk on it. Any suggestions on what might have happened?