Sorry but I had unprotected intercourse with my boyfriend on 16th of September! And within 24 hours (i.e in 21st hour) I took the ipill. And after taking the emergency contraceptive pill I felt headache and lower abdominal pain. My Periods are on 10th every month. But previously in September I got periods on 6th of September. Means on the 10th day of my menstrual cycle I had the intercourse. Now I am waiting for my periods to ensure that ipill did its work. Please tell me my periods will be delayed or may come early? Thank You Have A Nice Day