Contraceptives can be risky sometimes, they may work, or backfire on you. At times its sheer luck. Anyway am curious, from what i read it seems like your not married right? In this day and age where people are trying so hard to protect themselves from sexual transmitted diseases, you are okay with having unprotected sex, don't you feel or get scared about the whole idea? Don't you care about your life and health? Anyway that's just my thinking. It's always good to follow your doctors instructions, but sometimes it's good to also keep your own records. If you know your cycle, whether its regular or not, that should give you an idea of what to expect. If your cycle is regular, your probably not pregnant because you already ovulated within the week of waiting