What to do after a missed birth control pill depends on the specific situation: where you are in your pack, how many pills you missed, and whether you started a new pack late. This guide is organized by scenario for the combination pill (estrogen plus progestin), so you can find the situation that matches what happened and see the relevant guidance directly. If you take a progestin-only pill (mini-pill) or a drospirenone-only pill, the pack structure and timing window are different, so use the pill-type guide linked below instead.
Other guides in this series
Missed a Birth Control Pill in Week 1 of Your Pack (Days 1-7)
Week 1 is the highest-risk period for missing a birth control pill. You have just come off the placebo pills or pill-free interval, and your hormone levels were already at their lowest. Missing a pill in the first week extends this low-hormone window.
Less than 24 hours late, week 1
Take it now and continue your pack
Take the missed pill as soon as you remember, even if it means taking two pills in one day. Continue the rest of your pack as normal. No backup contraception needed.
24 hours or more late, week 1, one pill missed
Take it now and use backup contraception
Take the missed pill immediately. Continue your pack. Use condoms or another backup method for the next 7 days. If you had unprotected sex during the placebo week or in the days before missing this pill, speak to a pharmacist or healthcare provider about whether emergency contraception is needed.
Two or more missed pills, week 1
Take the most recent pill and use backup contraception
Take the most recently missed pill immediately, leave any earlier missed pills. Continue your pack. Use condoms for the next 7 days. If you had unprotected sex in the 7 days before missing these pills, contact a pharmacist, doctor, or sexual health clinic about emergency contraception as soon as possible.
Missed a Birth Control Pill in Week 2 or Week 3 (Days 8-21)
A miss in the middle of your pack is generally lower risk than a week-1 miss, because you have had at least 7 consecutive days of hormone pills before the gap. The guidance for one missed pill is straightforward; two or more missed pills still call for backup contraception.
Less than 24 hours late, week 2 or 3
Take it now and continue your pack
Take the missed pill as soon as you remember, even if it means taking two in one day. Continue as normal. No backup contraception needed.
24 hours or more late, week 2 or 3, one pill missed
Take it now and use backup contraception
Take the missed pill immediately. Continue your pack. Use condoms for the next 7 days.
Two or more missed pills, week 2 or 3
Take the most recent pill and use backup contraception
Take the most recently missed pill immediately, leave any earlier missed pills. Continue your pack. Use condoms for the next 7 days. If fewer than 7 hormone pills remain after the missed pills, skip the placebo pills and start the next pack straight away.
Missed a Birth Control Pill Near the Placebo Week (End of Pack)
Missing pills in the last stretch of hormone pills (roughly days 15-21) is the second high-risk window. When you then reach your placebo pills or pill-free interval, the total time without hormones, the missed days plus the placebo week, can exceed 7 days, which is long enough for ovulation to potentially occur in some women.
One or more pills missed with fewer than 7 hormone pills remaining
Skip the placebo pills and start the next pack immediately
Take the most recently missed pill immediately. Continue the rest of your pack. When you reach the end, skip the placebo pills and start your next pack right away. Use condoms for the next 7 days. If you had unprotected sex in the 7 days before missing the pills, speak to a pharmacist about emergency contraception.
Always check your patient package insert for the guidance specific to your brand, or ask your pharmacist, doctor, or OB-GYN.
Started a New Pack Late
For the combination pill, the hormone-free gap (placebo pills or pill-free interval) should be no longer than 7 days. If you start your new pack more than 7 days after your last hormone pill, that gap has extended beyond what provides consistent protection.
New pack started 8 days or more after the last hormone pill
Start the new pack and use backup contraception
Take the first pill of the new pack as soon as you remember. Continue the pack as normal. Use condoms for the next 7 days. If you had unprotected sex during the extended gap, speak to a pharmacist or doctor about emergency contraception as soon as possible.
For the 84-day extended-cycle pill (such as Seasonique or Seasonale): 84 consecutive hormone pills are followed by a short placebo interval. The same principle applies, starting the new 84-day cycle more than 7 days late creates a prolonged hormone-free gap. Follow the same backup contraception guidance and check your patient package insert.
Quick Reference by Scenario
| Scenario | Action | Backup contraception? |
|---|---|---|
| Week 1, <24h late | Take it now, continue pack | No |
| Week 1, 24h+ late or 2+ missed | Take most recent, continue pack | Yes, 7 days |
| Week 2 or 3, <24h late | Take it now, continue pack | No |
| Week 2 or 3, 24h+ late or 2+ missed | Take most recent, skip placebo pills if <7 hormone pills left | Yes, 7 days |
| Near placebo week, <7 hormone pills remaining | Take most recent, skip placebo pills | Yes, 7 days |
| New pack started >7 days late | Start new pack immediately | Yes, 7 days |
| Progestin-only pill (mini-pill) or drospirenone-only pill | Rules and windows differ by brand, see pill-type rules and windows | |
Outside the US
In the UK and some other countries, this is usually called the combined pill or the contraceptive pill, and the same pack-position logic above still applies. UK users may see brands such as Microgynon, Rigevidon, Cerazette, Cerelle, or Slinda, and dosing windows there are set by the FSRH rather than the CDC or ACOG. If you're in the UK, check your patient information leaflet, or speak with the NHS, your GP, a pharmacist, or a sexual health clinic.
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Keep a clear record of your pill schedule
Estroclic records your pill schedule and dose times. When you need to speak to a pharmacist or doctor about a missed pill, you have an accurate timeline of what happened and when, including where you were in your pack, rather than trying to reconstruct it from memory.
Sources
- Centers for Disease Control and Prevention (CDC). U.S. Selected Practice Recommendations for Contraceptive Use: Combined Hormonal Contraceptives, missed pill guidance. cdc.gov
- American College of Obstetricians and Gynecologists (ACOG). Combined Hormonal Birth Control: Pill, Patch, and Ring. acog.org
- Planned Parenthood. What do I do if I miss a birth control pill? plannedparenthood.org
- UK guidance: NHS. Progestogen-only pill, how to take it, missed pills. nhs.uk
- UK guidance: Faculty of Sexual & Reproductive Healthcare (FSRH). Combined Hormonal Contraception guideline, 2019 (updated 2023). fsrh.org