"i want to share my experience to possibly ease some of the ladies out there.
the incident occur in nov 18 (the condom broke) and it was 4 days after my period ended and approximately 4 days before ovulation. this means i was fertile. 
when we noticed that the condom broke, we immediately bought plan b one step and was taken about 45 minutes or an hour later. 
the sooner you take the greater the chances it will work.
so i waited anxiously, praying i get my period. i felt side effects such as fatigue, bloated, nauseous, cramps, and moody. i was that these might be  this pregnancy symptoms. 
i waited exactly two weeks and i got my period. i was the happiest person ever. my period was here early by approximately 3-4 days. good luck."