I took an ipill within 24 hours of unprotected sex. i had my withdrawal bleeding in 5 days and it ended for 3 days. after two weeks i'm feeling mild stomach pain with gastric symptoms. is there any chance that i'm pregnant?

Any symptoms due to pregnancy would be caused by the hormones that turn a pregnancy test positive. If concerned, do a test. In the story as posted pregnancy is not a logical assumption to cause the symptoms noted.

Of course there is a chance that you could be pregnant. Those pills do not work in all circumstances, particularly if they are not taken immediately after intercourse. They must be taken within five days, but the sooner they are taking the more they are likely to work. If you Continue to have symptoms, you should try a pregnancy test. Good luck.