Okay here comes a more serious approach from me, after my silly baby factory posting - and you asked for reasons, not for purpose:
The reason or at least influences, I think, is that my mom had very weird sex hormone levels which made her infertile. She has dominant brow bones, a square jawline, a prominent nose, very large shoulder bones, hips so small only a cesarian could get me out, etc. I would suspect her to be an MTF if I didn't know any better. Honestly. So I think her problem was too much testosterone in her system since at least start of puberty. I showed pictures of her to some of my trans friends, and they were like - HORMONE PROBLEM!!! She took female hormones since about 20, so her appearance became somewhat more female.
My parents tried to get my mom pregnant for years without success (and I guess they really tried hard
). At that time, a new experimental hormonal medicine was developped, which could make women like my mom fertile. She was one of the few guinea pigs who used it before it was officially thrown on the
market.My parents had to make scheduled sex for three years so they did not miss the moments when my mom was most fertile, it was always a few hours at a time then several weeks no chance of reproducing. This scheduled sex was annoying, they told me - I really understand that. Then came one miscarriage with twin boys, which is very sad. Losing two at a time must be horrible.
And tadaaa - then she got pregnant with me. A cute little girl *ahem*
She had to stop the hormones as soon as the tests were positive as it was unknown whether the hormones would lead to a miscarriage or freak (she made these tests often). I guess it's not this medicine which made me as queer as a 3-dollar-bill, but her hormone levels got back to her previous natural high testosterone level and had their effect on my brain and may have made me both trans and bi. Or I inherited her weird natural hormonal balance and it had stronger effects on me than on her. Or both effects were added, which I think is the most probable explanation. (Though I think biological influences don't explain everything.) And maybe it even had a slight effect on my body in the womb though it does not qualify me as intersex. Let me explain that...
This means, when I sit straight to pee on the loo, the stream of urine goes straight forward though meanwhile it goes against my dicklit and gets detracted downwards. I have to bend over on the loo in order not to cause a mess. When I was a baby, my parents and babysitters joked about me peeing like a boy as when you laid me down on the back, the urine stream went high into the air. I once had a short affair with a medical scientist, and he was totally astouned when he saw my plumbings and went like "Huh???" Because my urethral opening is right behind my clit, not an inch behind it. He even told me what puzzled him though the situation was really not appropriate at that moment and he was obviously not in the mood for medical comments but horny as hell... So this might be due to a hormonal imbalance in the womb, but might also be normal human variation unrelated to any intersex stuff, I don't know. Otherwise, I'm typically female there or at least used to be until injected testosterone had its effects (clit growth hooray).
I even inherited my mom's natural hormonal balance, had taken female hormones since teenage years so that I did not become masculine. I hated taking these pills, but before I had a period which was only a spotting but three weeks out of four and that had freaked me out. The pills helped me have my period not all the time... I stopped them one year before going to a therapist to get me on T and guess what? The spotting problem was not that extreme any more, I grew body hair and muscles, my fat distribution changed and after one year, I started having a breaking of the voice, the period became rare. Really. It was a blessing. But the changes were much slower than on testo. So I went to a gender therapist for a year to get his approval for testosterone.
I'm not sad about the testosterone effects on my brain in the womb at all, as I like being who I am, even if it causes a lot of stress sometimes. I mean, somehow I'm a freak, but that does not make me less adorable than anyone else. I could never ever imagine me feeling I am female. I would also miss being bi a lot as I always imagine being monosexual must be horribly weird and boring (in case my bisexuality was also caused or influenced by the testosterone rush in the womb).
