It's important to remember that not only birth control effects hormones or contains them. Your milk, your beef, your chicken, unless organic, are pumped full of hormones. So what you eat and when you eat it during your pregnancy could determine your childs sex or make them the wrong one. Sounds like a story the 5 o'clock news would use to scare you into watching their late show, I know. "How you could be changing the sex of your unborn baby, this very moment!! Tonight at 11." But here is a scary thought: what if it's true?
During gender therapy I told my therapist that my mother took birth control while pregnant and she hinted at the significance of this, as I suspected she would. I figured putting all of those artificial hormones into an unborn baby might somehow have relevance. She also pointed out my masculine features, including a small adam's apple, a heavier brow and a square jaw. I have always felt, due to my size, if you removed my breasts and gave me a penis, I would not need testosterone to pass as male as some female to male guys might. (And anyone is welcome to give me a penis at any time. Phalloplasty is an expensive surgery.)