Weird knees agony?

I fell about a month ago definite bad on my knees, I have a mild headache still, what could be wrong? I am going to the doc next week, Im basically curious as to what this could be. Well if it is a dull pain it might be from your plunge.
I have a dull strain in my knees from falling in snowboarding similar to a week ago.
I am probably younger than you(no offernce i am 14) so my body would rebound faster (maybe)
I don;t devise the pain surrounded by unusual, but you'll know soon enough.

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