So let's just start when I last had my period, which was Feburary 20th and I started Aviane on Februrary 21st and its March 15th and I haven't gotten my period. I was put on the pill since my periods were irregular. I had my period every 2 weeks then 6 weeks in a pattern for about 4 months. I honestly am worried since I have never been on birth control, but I have used plan b twice I had unprotected sex 9 days after being on the pill, but like in March 7-10 I took the pill 2-3 hours late and never skipped a pill. Can anybody help me find out why I'm late. Or should I just wait for my period to come. Or could I be pregnant?