I read somewhere that meditation increases the chance to have LD,
so i started doing this meditation:Meditation - What is Mindfulness Meditation and How Do I Do It for a couple of days.
I notice that if i do it before sleep it makes the dreams more vivid
yesterday I was meditation and suddenly the black screen infornt of my eyes was filled with a little light and I felt that my body is spinning really fast.. it was only for a few seconds and I stopped it because it was scary.

Somebody knows what was it?
and do you have better meditations for lucid dreams?
thanks.