"i took plan b on august 23 exactly an hour after the incident! i was freaking out that it didn&#039;t work because i wasn&#039;t experiencing any symptom. a week later i had major cramping. then on sept 3 i started to spot and on sept 8 i finally got my period. i was a week late. the pill works ladies so just be patient. the anxiety will make you think the worse so relax!"