Possible sexual fantasy

Ok, this story goes like this,
when I was six years old, I started to imagine my foster mom I had at the time spanking my bare butt.
I got that alot at a younger age from other people which I hated alot.
When I was 6 and moved into a foster home, I began to have sexual feelings about the foster mom and some other women doing it to me.
I would try and provoke the foster mom into doing it and if she did, it would get me horny.
As I got older, I wanted more women to do it to me and even some older cousins and aunts of mine. My question is, is this normal and do other kids have this thought or fantasy.