It Pushed Up At Me and Held It There For About 10 Seconds.

When I was younger I used to sleep on the top bunk in my parent's room as it was the only place I was able to sleep. One night I just couldn't sleep and lie awake thinking, I felt something push up at me from the bottom, now normally you can hear the creaks when weight shifts or at least hear rustling from below when they move around in their sleep. This night I didn't hear a peep. It, whatever it was pushed up at me and made my back go significantly out of allignment. After a while I got somewhat annoyed and said "cut it out", I almost didn't say anything because my parents aren't the type to do something that inane. I looked down at them and they were asleep.