I had sex December 1st, 2014, two days after ending my period. During sex, the condom slipped off & as a result I took a plan B pill about 45 hours later. The very next day after taking the pill I bled for 3-4 days. My period was due on December 25th, 2014. It is now Janurary 8th, 2015 and I still haven't began my period. Is this normal or may I be pregnant? Also, when should I expect to get my period?