My last period was on September 22nd, and I should've ovulated on October 4th. My boyfriend and I had unprotected sex on October 16th...he pulled out. Later that day I went and got the PlanB One Step pill. We had unprotected sex again the next day (October 17th). I went and got another emergency contraception pill on October 19th. I was supposed to get my period on the 18th. It is now the 21st and it still hasn't come. My periods are usually regular. Yes, I know I should be on birth control. Do you think I could be pregnant or is it the emergency pills that are making me late?