"i have wanted to share my experience for some time to help other ladies out there. i have taken the plan b pill twice and it has worked for me both times. each time it was because semen/ejaculation had gotten inside me and into my vagina. when this happens i quickly try and do my best to &quot;flush it out&quot; then i use the restroom and pee. after doing this i took the plan b pill right after, the first time was less than 24 hours after the incident. the 2nd time it was around 20 min after sex. each time i have gotten my period around the time it was supposed to come. now i may just be lucky and i know not all women can say the same. i hope i was able to help."