Have I been almost falling into LD's?

[Fruscainte]

Quite bluntly, I've been reading up on these techniques, forums, etc. on how to HILD, WILD, DILD, WBTD (I think that's it) and all that jazz. Well I was reading that before going into a WILD LD that you sometimes would feel a sinking sensation. That you are falling through the bed, or through the wall, etc. Well looking back through the years, that has happened A LOT. By a lot, I mean at least one or two times a week unconciously (This was before I knew of LDing, mind you). Every time, I did not exactly see the blue swirls but I did get this eerie sensation in me and I saw spots on the roof. Yes, it's weird to explain but my roof I saw colored spots, almost like a rainbow except...darker. I would then, RIGHT as I'm about to go to sleep feel myself sinking. Or being thrown in a way, or just falling down. I would immediately force myself up, I was scared to hell when this happened back then. Was I falling into LD's? I mean, in my defense, I have a strong mind. I really only use my creative side of my brain, not exactly my logical side of the brain in every day life (*snicker*) and and just an overall creative guy. Was I falling into LD's? I was too scared to find out, and one time I did fall into one but I thought I just was waking up (false awakening) and went back to bed. *Shrug* Advice would be greatly appreciated.