Thread: I fell unconcious and got a dream withing few minutes?

Hi,

I never new that i had some kind of phobia or fear.
but in year 2004 i went for a blood donation and funny thing happened.
i started feeling something weary in my head(as if i have been drugged) when i saw a guy bleeding from his hand(a lot of blood) so i went took a chair and sat down but within a minute or some seconds i fell down on floor completely unconscious.and had this dream.
"i am going inside a train and a big dragon with wings is flying over the train and i was watching it.it seemed like it was trying to catch me

i woke up and found myself on the ground surrounded by everybody and the doc was rubbing my chest with ice cubes and had no idea how i got down on the ground and who removed my shirt.

can somebody explain this phenomena.
i don't know how someone could get into a REM state where dreams occur within a short period of time while it takes hours to get to this state while normal sleep.