something similar happened to me. rollerblading w/ a friend down in georgia she went ahead of me and when i turned the corner i saw her at the end of the cul de sac unconscious in a pool of blood. the blood was coming from somewhere on her head but it took me a while to find the spot b/c she was covered head to toe. i didn't remember the address friends we were staying w/ but a lady passing by gave me a clean sock to help stop the bleeding and i described the house we were staying in. all i could do was try to remember all the first aid i had learned (it came in handy). after about 8 hrs in the ER, then i cried.