She needs to take a pregnancy test or see a Dr. Yes, she could be pregnant. I do not know a lot about cortel tablets, so can't help you there. First find out what's going on. If she is not pregnant, 40smomma is right, you need to find a better form of birth control. Withdrawal is very unreliable.
Best of luck to you.
tnx for the help..this time,she took cortal tablets..is it possible to cut off her pregnancy?
Absolutely she could be pregnant. A woman can ovulate at anytime during her cycle although usually it happens around the 14th day.
Why don't you have her take a home pregnancy test? Also, using the withdrawal method is a very, very unreliable way of birth control - you need to find another way like birth control pills & always use condoms as well.
Good luck - I hope it turns out okay but next time use a more dependable method of birth control.