I just went skiing for the first time with my dad and my siblings. I'm only 14 years old. I was doing pretty good but then I fell pretty hard. I mean, I was falling before, but this time, my back slammed against the ground and my head whipped forward. Now it hurts when I shake my head or move it too rapidly. I'm scared I could have a concussion and I'm also really scared if I fall asleep I'll slip into a coma or die. Can someone help? I don't feel dizzy or lightheaded and I can remember my full name, what happened, what I had for breakfast, my birthday, my parents' birthday... The usually asked stuff.... But I read somewhere that it could take a few days for the full on symptoms to kick in. Any help will be greatly appreciated.