Hit my head today on my eyebrow bone against the side of a shelf with the medium force of me standing up. it was more startling than painful because i didn't realize the shelf was there. i think there may be a little tiny bit of swelling but as for the pain, it's barely enough to even know that it happened. i have to strain the feel it. when i press it it's still a very dull almost unnoticeable pain(if you could call it pain). is it possible that i am concussed? also this happened about 12 hours ago.