Hmm...was it a dream, or a hallucination from sleep
paralysis?
Did this dream feel more 'real' than the usual dreams you have?
Were you actually in your body, but you saw things happening around
you with your eyes? Could you move your limbs when this was
happening?
Sorry to bombard you with these questions, but from what you
mentioned - "i tried to talk, but i cant talk loh", "close my eyes
n open again" - it sounds more like sleep paralysis, as you had
control over your actions, unlike in dreams which are more like
movies in your head. 
If you answered yes to at least 2 of the questions, well, tough
luck. 
Sleep paralysis is a condition whereby you wake up paralyzed,
ranging from several seconds to minutes in severe cases. Yet your
mind is fully active during this period. It's sometimes accompanied
with hallucinations, and associated with lucid dreams, multiple
awakenings (dream inside dream), and out-of-body experiences.
I've experienced it many times when I was aged 12 - 15, but
thankfully not so much now. After going through it so many times
you kinda get used to it. The bloody scary part though, comes in
when you start hallucinating things. 
Only thing that I can advice to you to avoid sleep paralysis is to
regulate your sleep pattern. Try to sleep around the same time
everyday. 
Similar threads posted: http://sgforums.com/?action=search&search_str=paralysis
