question: I fell riding my bike today and knock myself out. I was out maybe 2 minutes. When I came to, I heard the fire truck sirens, but then seemed to black out again, the next thing I remembered was the attendants around me. I am now home, not showing any signs of a concussion, eyes are dialating the same, no nausea. My neck is aching and there is other soreness. Do you think I should go to emergency.