How do I use emergency contraception?

Bottom lineUse emergency contraception as soon as possible after unprotected sex: emergency pills work up to 3 or 5 days depending on the type (sooner is more effective) and are available from pharmacies, while the copper IUD, fitted by a clinician up to 5 days after, is the most effective option and can stay as ongoing contraception; it doesn't end an existing pregnancy or protect against STIs, so take a test if your next period is late.

Emergency contraception can prevent pregnancy after unprotected sex, a missed pill, or a contraceptive failure. The sooner you use it, the better it works - so act quickly.

Your options

• Emergency contraceptive pills:
  • One type works up to 3 days (72 hours) after sex
  • Another works up to 5 days (120 hours), and is more effective for some people
  • Both work best the sooner they're taken
• The copper IUD (coil):
  • Can be fitted up to 5 days after unprotected sex (or up to 5 days after the earliest likely ovulation)
  • It's the most effective emergency option, and can stay in as ongoing contraception

How to get it

• Pharmacies provide emergency pills (sometimes free), and you can also get them from sexual health and GP services
• The copper IUD is fitted by a clinician at a sexual health clinic or GP

Good to know

• Emergency contraception doesn't end an existing pregnancy and isn't for regular use
• If you vomit within a couple of hours of the pill, you may need another dose - check advice
• Take a pregnancy test if your next period is late or unusually light
• It doesn't protect against STIs

When to see a clinician

Seek advice promptly to choose the best option for your timing, and to arrange ongoing contraception.

See what is the morning-after pill for more.

Femora helps you track your cycle so you know your timing and can watch for a late period afterward.