I wish I could relate, but things went differently for me.
When I was a young boy, I was pretty happy with my Gender. It wasn't until the summer before I started 7th grade that things changed for me. I started crossdreaming at that time and feeling horribly jealous of the girls in my class. They were becoming pretty and I felt like I was turning into this gross hairy thing.
But even then, if asked, I would have said I was happy being a boy. But slowly, over time the crossdreaming tore that down. Now, in my thirties, I find myself more and more wishing I had been born a girl. It is infuriating.