<s>[INST] Hi my partner and i had unprotected sex on the 24th of may she took the Ipill within 24 hrs. Her normal period date for the last month was 1st may - 7th may. She had this withdrawal bleeding long back when she had taken the pill last year. But Since having the pill this time she hasn t got any withdrawal bleeding and she s also due on her periods. Could this possible indicate that she s pregnant.? What s are the chances? [/INST] Hello dairy understand your concerned have taken I pill with in 1 hour of the sex. It is highly effective (around 95-98%) to prevent the pregnancy. So there is only 1-2 % chance of the pregnancy. Delay in the period by 8-10 days could be due to the side effect of the pill as it cause prolongation of second phase of the cycle. (because it contains high progesterone). So wait for your period and it will come.Meanwhile, avoid stress, take healthy diet, do regular stretching exercise and walking, Chat Doctor. Hope this may help noncontact Chat Doctor for further health query Best regards </s>