Every year I teach dozens of students at the University of Birmingham. Most of the students on the gender and sexuality courses are women. I guess this is because the boys don't think that gender applies to them: that it's a subject for girls.
Don't write the book you think publishers want to commission. Plenty of other writers will be doing the same thing.
I used to think about how I was conceived quite a lot when I was about 10 or 11, but I don't think about it at all now that so many other babies have been born in the same way.