Is it normal that i sleep naked

yes, it is normal. I also do it from time to time, strange thing is I dream about the weirdest sexual things while sleeping naked. Like, first I am dreaming about sucking my own cock, then It kind of occurs to me that I cannot do that so the one in my mouth must be someone elses cock. Then I turn around and I am facing a buttock, A very smooth kind of small buttock, then I feel something between my legs, look there and there is something hairy just below my pelvic area, it looks like a head but it's facing upward.. then my toes start feeling wet, like someone is sucking on them, then I wake up, feeling violated and with a sore dick.
I should really stop sleeping naked without locking my door.

Completely normal.

I wish I could sleep naked. I can't though, I'm living with my family and I share a room with my sister. Plus, the lock to the room is broken.

I should move out soon.

If that what your comfortable with then do it.