I wake up and I'm still in my dreams?

Ok so last night I had a dream about having sex with a classmate named Sarah. When I woke up, I felt like going and spraying my cologne on and then going and lying in my sisters bed as I BELIEVED SARAH WAS IN HER BED. Luckily I didn't act on instinct and snapped out of it after about 10 seconds, realizing that my sister was in that bed and not Sarah, and then I became fully conscious and aware that it was all a dream.

I'm very scared about this, I don't wanna sleep rape my mom or sister, I'm not attracted to my sister by any means but because she sleeps in my room its the closet bed besides mine so I think thats why I want to go to her bed, about 3 times I have thought there were other girls in her bed instead of her.