If you miss a birth control pill, the right step depends on which pill you take and how many you've missed. For most combined pills, missing one is low risk — take it as soon as you remember and carry on. Missing two or more, or being late with the progestogen-only pill, raises the risk and usually means using backup contraception.
First: which pill do you take?
The rules differ between the two main types:
- Combined pill — contains estrogen and progestogen. More forgiving of a single late dose.
- Progestogen-only pill (mini pill) — has a tighter daily window, so timing matters more.
If you're not sure which you take, check the packet or ask your pharmacist.
Missed combined pills
According to the NHS, a missed pill means it's more than 24 hours since you should have taken it.
One missed pill (anywhere in the pack)
- Take the missed pill now, even if that means two pills in one day.
- Continue the rest of the pack as usual.
- You're usually still protected and don't need backup.
Two or more missed pills
- Take the most recent missed pill now; leave any earlier missed ones.
- Continue the pack and use condoms (or avoid sex) for the next 7 days.
- What you do next depends on where in the pack you are — the rules around your 7-day pill-free break are important, so follow the leaflet or ask a pharmacist.
- If you had unprotected sex during this window, consider emergency contraception.
Missed (late) progestogen-only pills
The mini pill's window is shorter — often 3 hours for traditional types, though some newer formulations allow up to 12 hours. If you're later than your pill's window:
- Take the late pill as soon as you remember (just one, even if you missed more than one).
- Continue the next pill at the usual time.
- Use backup contraception for 2 days.
- If you had unprotected sex before those 2 days were up, emergency contraception may be appropriate.
When to think about emergency contraception
Consider it if you've missed pills and had unprotected sex during the at-risk window. The sooner it's taken the better — see how the morning-after pill works. A pharmacist can help you decide quickly.
Preventing missed pills
- Take it at the same time daily — pair it with a fixed habit or set an alarm.
- Keep a backup method (condoms) on hand.
- Refill early so you never run out mid-pack.
Missed pills are the main reason the pill is less effective in real life than on paper — see how effective the birth control pill is.
The bottom line
One missed combined pill is usually fine; two or more, or a late mini pill, needs backup contraception and a quick check of your packet's rules. When in doubt — especially if you've had unprotected sex — ask a pharmacist promptly and consider emergency contraception.
