Traumatic Brain Injury

So on Friday, The Dog smacked her skull into my forehead as she jumped off the couch to catch a tennis ball that was still in my hand.

Now I have an invisible but painful bruise and swelling just above my right eye. More interesting is the palm-of-my-hand-sized area just above my temple that feels like it had a Novocaine shot several hours ago, and the entire-hand-sized area behind that in my scalp that feels (when I touch it or brush my hair) like it fell asleep several hours ago and is almost done waking back up.

I'm not sure when to start worrying about this, but if I decide that it's time to seek professional help, I have to tell someone how it happened. It's not that I fear dark consequences. It's the part where I have to admit that I have an injury from a dog running into my head.