Family Planning Plus

If you are on a 28 day pill pack with 21 hormone pills and seven placebo pills, you can usually expect your period to start around day 3 or 4 of your placebo pills (your third or fourth pill during the last week). If this is your first pack of pills, remember that you may have side effects during your first three months of pill use. These side effects include menstrual irregularites (bleeding or spotting between periods, decreased bleeding and fewer days of bleeding during your period, or even a missed period), breast tenderness, nausea, moodiness, complexion changes, etc.).