... after my period, and it didnt delay my period, I ended up getting it twice that month. I couldnt afford to refill my prescription so i skipped a few months and I recently just started it again this month. I started it on a sunday about a week and a half after my last cycle. I have been having unprotected sex with my boyfriend this whole time (even before starting my bc again) My period is now 13 days late, and I have been having horrible mood swings, and constant slight cramping and discomfort in my lower abdomen. I have also been sick feeling, and was throwing up all day 2 weeks ago. I now have one blue pill to take before my last week of pills in the pack. I was just wondering if not starting the pills right after my last period is causing me to be late??