Are there any of you who ever get scared to lucid dream?

I used to be quite into lucid dreaming about a year ago, and stopped only after I had a few nasty experiences with it.
After a while I began to lucid dream all the time, every night, especially when I didn’t want to. On one occasion i was sent into a lucid dream with the sensation of boulders falling on my head. Once in the dream, whenever I would fall down I would get that same sensation. I eventually woke up, and was quite freaked out by it, how real the falling boulders felt on my head, that I didn’t really want to go back to sleep.
But again the same sensation came, and again I slipped into a lucid dream.
This happened about several times in that one night, with a fair few false awakenings too.
After that It took me a few days to really know whether I was awake or still dreaming.
And I didn’t want to lucid dream anymore. And after about a week, with a large amount of sleep loss, my lucid dreams stopped.

Only recently I have become interested again, and decided I would join a forum, while keeping a dream journal, to see what other peoples experiences are and have been like. hopefully it will ease my fears of lucid dreaming.
Has anyone had any similar experiences?