Concussions..

So, I recently got what I guess was a pretty bad concussion. I mean, it was A LOT worse than the first time I got one.
I don't even know what happened. I just remember smashing the back of my head into the snow and my vision just vanished. Everything just went black. I heard this noise, it sounded like I was standing next to a helicopter with the blades running. Chopping the air, and spinning it around my body.
The part that really freaked me out was that I had seen the exact same thing before. In a dream, the exact same feeling, the noise, what I saw. As my vision slowly came back in the dream, I saw someone sitting across the hill and down from me. I had no idea who it was. When it actually happened, I could tell it was someone that I knew. Oh, I should probably mention that when there's pressure put on my chest, I can't breathe. As my vision slowly, spottingly came back, I saw her. unable to breathe, or hear anything. With my head spinning, I just laid there. I honestly thought I was about to die. Im my last efforts before what I thought was death, I tried to make my way over to her. I couldn't move. All of a sudden something just flashed really brightly white. I no longer heard the weird noises, and I could see again. My ears were ringing, but I was okay. Now, I'm having problems with remembering things. I can hardly remember anything from that point, to now. I don't even remember making this blog. Everythings just so strange.