Sounds like sleep paralysis. Read up about it and about WILD, so next time you know what you can expect and you not scared. You were very close to entering a lucid dream. You just keep watching the images behind your eyelids, until they turn into a movie/dream. Then you pick a spot in the movie and wish to be there. I usually say slowly and deliberately 'I ...am...there'. That transports me to the ground in a dream. And you are lucid. Good luck