Conversation: The conversation between human and AI assistant.
[|Human|] Hi sir/madam, We had intercourse on 11th feb, 2013. and she had taken unwanted - 72 within 4 hours of intercourse. later get withdrawal bleeding on 17th feb, 2013 for 4 days just like normal period. her periods are irregular in general. now when she can get next period. we dont want baby now. is there any chance of conceiving after taking pill within time and also got withdrawal bleeding???
[|AI|]  HI, thanks for using Chat Doctor The risk can vary according to where the woman is in her menstrual cycle at the time of intercourse. If she was close to the time when she would have ovulated or had already ovulated then it does not work as well. Ovulation generally occurs 10 to 17 days since the onset of the last period. It varies from woman to woman. In general, the effectiveness is high if taken within 12 hrs which was done. The effective is approximately 75% which means that it reduces the number of women who would have conceived by 75 %. If the periods are delayed you would have to do a pregnancy test to determine if conception took place. If this is not the case, then the two of you may want to consider using regular contraception such as oral contraceptive pill, injection, condoms, the patch. There are different formulations that you can consider. I hope this helps