I was a preemie also, under 5 lbs and I was an only child, also is a very matriarcal family. I guess I just no chance to be normal LOL.
Seriously though, according to what I've read over the years. In our early stages of development we all start out as females. Only later on do we develop into males. Is it possible that being premature that part of our brains hadn't caught up with our bodies and thus we have our fem sides?