I have been on tri-sprintec for 2 months. This sunday i will be starting my third pack of pills. So right now I'm on the sugar pills and this will be my third day taking them. I haven't started my period yet. My boyfriend and I just had sex last week and we used a condom a couple times but we also didn't use one. He pulled out every time even when we used a condom. Could i be pregnant or do you think i'll start my period soon?