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Understanding Birth Control Effectiveness
March 31st, 2026

Can You Get Pregnant on the Placebo Week of Birth Control?

Yes, you can get pregnant during the placebo week if you missed pills earlier in your cycle. The placebo week itself doesn't provide contraceptive protection - it relies on the hormonal suppression from the previous three weeks of active pills. If you missed two or more active pills in the weeks leading up to the placebo week, ovulation can occur during this hormone-free interval. Birth control pills are 91-99% effective with typical use, but effectiveness drops significantly with missed doses. The risk is highest when pills are missed in the first week of a new pack or the week before the placebo period, as this extends the hormone-free interval beyond seven days.

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