Is it normal to think this kind of dream is some sort of sign?

It's winter & I'm in Canada with a few friends at a mall. The 3 of us run into a friend. We then decide to go outside cuz it started snowing heavily & we like snow. Plus, a few of us wanted a cig. We start walking & talking but I get seperated somehow & can't catch up. I call one of them & she said they'd wait. Then, I died. I didn't know. I call again cuz I'm close but they're still unaware so I start yelling her name & grabbing at her. Nothing. I notice other people looking at me & all the living disappeared. A girl stepped forward to explain what happened & is very nice. I felt better! We then began to play around in the snow on train tracks (I don't know how we got here) & we were happy, 'til a train came. We dodge it. She fell in mud & began to sink. I cried, gave her a kiss on the forehead & thanked her. She was gone & everyone disappeared. I paniced & entered a bldg. I began to frantically pray & beg for life again but nothing happened. I heard nothing & it was getting dark. Then, I woke up.