Has anyone had a concussion before?

I'm asking because I was at a party and I passed out in the bathroom, and my friend told me that people kept opening the door and hitting me in the head. So we were joking that I might have a concussion, and all I've been having is headaches and today I had a short memory lapse..but I don't want to be paranoid over nothing.
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+1 y
Thankyou everyone for all the advice! :) I feel much better today. I was probably being paranoid.
Has anyone had a concussion before?
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