Hi. I have a question about the hormones used and birth control pills and how your own hormones react with them. Last december I became pregnant after a condom broke and emergency contraception failed me. I used plan b right away and all the reasons that are given on why it should fail don't apply to me. Could it be that my body just didn't react to that dose of hormones? And if that's true could the same thing happen with the pill since it uses the same hormones? Supposedly every woman has a slightly different mix of hormones. I started my first pack the sunday of my first period. A week later i've gotten my period again. Why isn't it coming when i'm taking the sugar pills? Could it be that my body just doesn't work well with it?