Last month my boyfriend and I had sex and just to be sure I took the emergency contraceptive pill. I got my periods 3 days after which was the 14th. We then had sex again the 22nd using a condom and when we were finished we made sure that the condom didn't break and to our luck it didn't break. We then had sex a second time and the condom broke but luckily I noticed it before he ejaculated so he took it off. This month however I haven't gotten my periods and I am very worried. Could it be the pill that I took? I'm also under a lot of stress and I think it could be a reason that I didn't get it either. I've been experiencing PMS but haven't gotten my periods yet. HELP!!