Dreaming into SP then back out.

OK, this morning I woke up around 5AM. I decided to go back to sleep while trying to LD. Well, to start things off, I laid there for a while (like ~3 minutes) then I started finding myself at different "scenes". It was strange, it was like I started at one spot for a few seconds then when blank, then found myself at another place. But, at last, the scene was stable and I found myself on top to this castle-like tower as I looked around, it was like a mountain range, (Now when I think about it, it was like that mountain place from the Assassin's Creed 2 video game) But yeah, I still knew I was like awake but at the same time I was asleep. I can't really explain it but, for some reason, I jumped off the tower. Then out of no where, I had angel wings come out my back as I was gliding down. I started to hear a strong windy noise, I knew it wasn't from the scene. Every second, it's gets kinda louder but, I wasn't afraid at all. Then, all of the sudden, after the noise subsided, I woke up to find my heart rate accelerated, like someone had scared me. I really don't know what happened or what caused me to awaken but, I think I was entering SP. I don't know but, can you guys help me? Thanks. :sleepmeditate2: