I was watching TV in the bedroom with Sandy and I fell asleep and

I don't know I was just awake as I am right now. But I was in this place that was so utterly black...nothing existed...no wind..I couldn't see anything. I wasn't afraid or scared as you would think you would be. It was actually quite calm and comfortable. I was confused as to what it was but somewhere I heard Sandy's voice so I turned to look where it was coming from and I saw a veil and it was moving but there was no wind and it covered a lighted opening but there was no light inside where I was at it was just black and I said I have to get to her. The next thing I just opened my eyes and the look on her face was shocking. I asked her what was wrong and she said "you quit breathing!"