My story is a-typical.
I didn't know at the time, but looking back I can see signs that show I'm not making it up now.
I was a tomboy as a kid, and I was happy because my mum let me wear whatever I wanted, climb trees, play sports etc. I remember as a child when I played imaginary games I would always choose gender neutral names, like Charlie or Sam, and I wanted people to not be able to tell that I was a girl. I wanted them to think I was a boy. I would pretend in my head that at school teachers thought I was a boy. I never told anyone this.
But my upbringing was Christian. When I hit puberty and started liking guys and girls, that was what preoccupied my thoughts. I hadn't even known it was possible to be gay (my primary school sex ed taught me that lesbians were women who shared a flat). I spent the first few years of high school questioning my sexuality.
Looking back over that time, the way I dressed and how I felt about my body all showed that I a) wasn't comfortable being feminine and b) wasn't comfortable with the changes that were happening. Breasts and periods and all that ->-bleeped-<-. I got depressed and anxious, particularly around my period (but more so than 'normal', I was suicidal). Then I developed eating problems. I knew my breasts would shrink if I lost enough weight so I starved myself. I started identifying as gender fluid because I knew something wasn't right, I knew I didn't feel like a woman and looking in the mirror, being on my period and being seen as female made me want to kill myself.
My mum started policing how I dressed. She thought that I felt depressed and upset over my body because of low self esteem, and weight problems, but instead of talking to me about them and finding out what caused them, she made me dress in girly clothes and wear make up. She still tries to do that. She thinks it will make me happier, but obviously it makes everything worse. But because of that I started trying to fit in, to make people happy. I wore loads of make up and dresses and skirts and I felt terrible.
I attempted suicide in 2011. After that I began exploring my gender more thoroughly. I've come to realise that what I called gender fluid isn't actually gender fluid at all. I am not supposed to be a female. My body is supposed to be male. My identity is male/androgynous, but my sex is supposed to be male. I'm just coming to terms with that now. I'm 18 now, so my story isn't completely a-typical. I'm still young. But I certainly didn't 'always know', at least not consciously.