this is my third pack of pills and the first pack my period started immediately after taking the placebo pill and lasted around 2 weeks and the second pack it also started immediately and lasted a normal 4-5 days. This time im on the 3rd placebo pill and I still haven't gotten it. Me and my boyfriend had unprotected sex 2 times but he pulled out both times. I haven't missed a pill and take it everyday within 2 hours of my scheduled time. What do I do?