Awake now. I had a dream, but don't remember it, & I didn't have sleep paralysis, so I don't have anything to add on that :/
But I did remember a really messed up dream I had once. I was being attacked by someone from the front, & wanted to raise my hands to defend myself, but I can't! It hurt to try to move them, & they felt like they were as heavy as lead.
When I woke up, I found out that my arms had slipped under my pillow, & were being weighed down by my head, stopping blood-flow & numbing them. It blew my mind that such a thing would affect my dream. I guess that must've meant that i was dreaming with SP off.
I believe I have a low tendency to get into SP, because even though I've had it at least 3 times that I could recall, I've also had MANY dreams a while back of fighting with people, & I'd wake up to myself punching the wall, kicking the wall, or hitting my head on my headboard, followed by a howl of pain :S