I had a couple of posts maybe a week ago saying that I had unprotected sex but while on the pill. I have not missed any pills, I have been very good at taking them. I've only taken it an hour to two hours late probably only 3 times out of this month. I finally got to my four inactive pills today (this is my first time taking Yaz, I switched from Ortho) but no period yet. When should I be expecting my period? Will my period come? Is there a possibility of pregnancy? Will switching around birth controls have an effect on my period and I might not get it atall until next month? Any answers would be really helpful.