Hello. I had sex on 4th March and took emergency contraceptive on 6th March (within 48 hours). I got withdrawal bleeding on 18 March which was normal flow and lasted for 5 days. My next persiod was due on 16th March, it's 27 March today ie 11 days over and I haven't gotten my period. I have been experiencing abdominal pain since the morning but no sign of bleeding. Does this mean I'm pregnant? If not, when should I expect my period? I am really worried. Please guide me.