Not to provide you with additional worries, but some women are just not protected well enough on the pill
. When my best friend was 21 and then 27, she got pregnant
both times while on the
pill. She is adamant that she never missed any pills, and that she conceived both of her daughters while on the pill. It does happen, and is more common than people think. Birth control doesn't necessarily fail, but when used incorrectly, the protection fails.