"this medication did not work for me, but my husband and i are happy i be expecting twins!  i went off birth control in early september with a plan to use condoms. we ended up not using any protection at a time when i thought i was ovulating so i took plan b within about 12 hours. i had what i thought was my period about five days early and assumed it was due to taking the plan b. six weeks later, i found out i&#039;m pregnant!  i think this didn&#039;t work for me because i was ovulating and must have already had an egg available that was fertilized before i took the medication."