Hey Boo Boo,
I can't recall if I've read other posts of your on this forum where you mention you are practicing lucid dreaming / OBE techniques?
If you are, from experience and a lot of reading, it sounds to me like you are very, very close to a a full blown lucid dream/"OBE" !! If you keep at whatever you're doing, you should within a few weeks or months at most be able to have "freer" experiences.
I recall (a long time ago now!) feeling like I was walking through thick invisible quicksand, barely able to move my legs during my dreams.....this was just before I started having full blown lucid dreams without any restriction of movement. If I recall correctly, that, and the other symptoms you mention (similar to a "succubus" experience, during the "vibration" stage" etc), are considered classic "pre-lucid" experiences.....you're close! Good luck! :)
