"plan b did what it was suppose to do. had unprotected sex a day before  ovulation (assuming ovulating day due to my period app) by accident. 11 hours later i went to walgreens purchased plan b.  2 weeks later i got period only 1 day late. however 1 week after plan b was taken i started spotting lightly until actual day of period.  so everything went great, as far as taking this on or before ovulation day."