"girlfriend and i had sex, condom broke and didn&#039;t realize till we finished. she was not on birth control and we were freaking out. she took the pill about 5 hours later, and for the next 2 weeks had some mild symptoms and light bleeding. confirmed she was not pregnant a few weeks later. pill does miracles, don&#039;t worry about the statistics (just there in case it happens to not work). if you take it before 24 hours, i&#039;d personally say you have a 100% chance of it working."