What you need to do after missing a birth control pill depends on two things: the type of pill you take and how many pills you missed. In most cases, taking the missed pill as soon as you remember is enough. But missing two or more pills, or being on a progestin-only pill with a tighter timing window, requires extra steps to stay protected.
One Missed Combination Pill
If you’re on a combination pill (the most common type, containing both estrogen and progestin) and you’ve missed one pill, meaning it’s been 24 to 48 hours since you should have taken it, take it as soon as you remember. Then take your next pill at the usual time, even if that means swallowing two pills in the same day. You don’t need backup contraception like condoms, and you don’t need emergency contraception.
The same applies if your pill is simply late but less than 24 hours overdue. Take it and move on.
Two or More Missed Combination Pills
Once 48 or more hours have passed since your last pill, the situation changes. Take the most recently missed pill right away and throw away any other missed pills. Continue taking one pill a day at your normal time.
Here’s the important part: use condoms or avoid sex until you’ve taken your pill consistently for 7 days in a row. Your hormone levels dropped enough during the gap that you’re not fully protected until that week of steady use rebuilds coverage.
Where those missed pills fall in your pack matters too. If you missed pills during the last week of active pills in your pack (roughly days 15 through 21 of a 28-day pack), skip the placebo pills entirely. Finish the remaining active pills and start a new pack the next day with no break. This prevents extending the hormone-free window to a point where ovulation could happen. If you can’t start a new pack right away, use condoms until you’ve taken active pills from the new pack for 7 consecutive days.
If you missed pills during the first week of a new pack and had unprotected sex in the previous five days, consider emergency contraception. That first-week gap is especially risky because it extends the hormone-free interval from the placebo week, giving your body more time to release an egg.
Progestin-Only Pills Have a Shorter Window
Progestin-only pills (sometimes called mini-pills) work differently and have much less room for error. The window depends on which specific progestin your pill contains.
If you take a norethindrone or norgestrel pill, you’re considered to have missed a dose after just 3 hours past your usual time. That’s a dramatically smaller margin than combination pills. If you’re more than 3 hours late, take the pill immediately and use backup contraception for the next 2 days.
If you take a drospirenone-based progestin-only pill, the window is more forgiving. You’re not considered to have truly missed until 48 hours have passed. If two or more consecutive pills are missed (48 hours or more), take the most recent one, discard the others, and use condoms or abstain for 7 days.
Because the timing rules vary by formulation, check your pill’s packaging or information sheet if you’re unsure which type of progestin you take.
Missed Placebo Pills Don’t Matter
If the pill you missed is one of the inactive (non-hormonal) pills at the end of your pack, typically the last 4 to 7 pills in different colors, there’s nothing to worry about. Throw away the missed placebo pill and keep going on schedule. These pills contain no hormones and exist only to keep you in the habit of taking a pill daily. The only thing that matters is starting your next pack of active pills on time. Never let the gap between active pills stretch beyond 7 days.
Why You Might Feel Nauseous
If you end up taking two pills in one day to catch up, you may notice some side effects. Nausea is the most common, along with breast tenderness, headache, or light spotting. These are temporary responses to the slightly higher hormone dose your body is processing. Eating something before or with your pills can help reduce nausea. Breakthrough bleeding or spotting may continue for a few days but isn’t a sign of anything harmful.
Vomiting and Diarrhea Count as a Missed Pill
If you vomit within 3 hours of taking your pill, your body may not have absorbed enough of the hormones for it to count. Treat it the same as a missed pill: take another one right away and continue with the next pill at your usual time. Severe diarrhea that lasts more than 24 hours can have the same effect on absorption. If either situation lines up with multiple days of illness, follow the guidelines for missing two or more pills, including using backup contraception for 7 days.
When You’re Not Sure What to Do
If you’ve lost track of how many pills you missed or can’t figure out where in your pack the gap happened, the safest approach is straightforward: take one pill today, continue taking one pill each day going forward, and use condoms every time you have sex until you’ve taken a pill a day for 7 consecutive days. This covers you regardless of the specific scenario.