I have been on Yaz birth control for about 2 years until I stopped taking it in November. My last period was around Thanksgiving (November 27). My long term boyfriend and I had unprotected sex in mid December. We used the "pull out" method. I also went to my obgyn the day before Christmas Eve to get my birth control prescription and an annual and they did a urine test to make sure I wasn't pregnant and that turned out fine. Yet I still haven't gotten my period and I'm freaking out. The only sign I've had is sore and tender breats which started a few days ago, but I also get that when I'm about to start my period. Please give me some input or whether you think I'm pregnant or could be pregnant based on what I said. I'm not sure if I could be pregnant or if my period is late due to hormonal changes with getting off of birth control. Thanks so much!