I had unprotected sex on February 12th of this year and got my period on Valentine's day, but to be safe, I decided to take the emergency contraceptive pill, provided by the pharmacy. I know realise I maybe should not have done this as my period cycle has been messed up because of it. That period was longer than most of my other periods, as the pharmacist said it would be. However, since then I have not had a period and my period is now almost 2 weeks late. This could also be because I have been under huge stress due to the death of a family member.