Just some addings to the previous.

I felt the snap of the astral body twice. It once happened when I was waking up and I felt it reintegrating. It was like a snap, not inconfortable but interesting sensation. The second time was when I woke up and I was on my way to the bathroom.
I also had some dreams I remember very well. In one I was vibrating, I exited out and I was near the ceiling but I couldn't hold it for too long. In an other one I was leaking out of my body but I couldn't move afterwards. I wonder were they OBE or just dreams about OBE like Robert said.
Also what do you belive about the teachings in your dreams? The occur randomly and I wonder about their reality. I would like to them to me more, but it's something I can't control. The last one I had was a guy that showed me the face of an alien, green face with big eyes, and told me that I will meet the alien after spiritual progress.