Skip to main content

Emergency contraception (the morning after pill)

  • Emergency contraception prevents pregnancy after unprotected sex.  
  • The sooner you take it, the more effective it will be. 
  • There are two types of emergency contraception available: a pill or an IUD (a coil that is fitted inside the womb).
  • The pill must be taken within 3-5 days and the IUD must be fitted within five days of unprotected sex. 
  • Emergency contraception doesn’t prevent sexually transmitted infections (STIs), including HIV. If you've had unprotected sex, it’s a good idea to get tested.  

What is emergency contraception?

Emergency contraception prevents pregnancy after unprotected sex. You can also use it if something goes wrong with your usual contraception (for example if a condom breaks).

There are two types of emergency contraception: the emergency contraceptive pill (also known as the morning after pill or plan B) or a copper IUD. The IUD is a t-shaped coil that goes into the womb.

How long after unprotected sex can I use emergency contraception?

The emergency contraceptive pill must be taken within 3-5 days of unprotected sex, depending on the type of pill. The sooner you take it after having unprotected sex the more effective it is. 

For the copper IUD to work as emergency contraception it must be fitted within five days of unprotected sex.  

Where can I get emergency contraception?

This can depend on where you live. In some places you can buy emergency contraceptive pills from pharmacists. Other places you may need to contact a healthcare professional. 

The cost of the morning after pill will depend on where you live. Sometimes it’s available for free through your healthcare provider. 

If you decide to use an IUD for emergency contraception it has to be fitted by a trained healthcare professional within five days of unprotected sex.
 

How does the morning after pill work?

It contains hormones that temporarily stop or delay the release of an egg (ovulation), which prevents pregnancy.  

Although they aren't designed as regular birth control, it is safe to use the morning after pill more than once in a menstrual cycle if you need to. But there has to be at least a five-day gap or both pills might not work.  

How effective is the morning after pill?

The success rate of the morning after pill depends on when you take it. 

If you take the morning after pill within 24 hours (1 day) of having sex, it’s estimated to be 95% effective. It’s 85% effective between 25-48 hours after unprotected sex, and it’s 58% effective 49-72 hours after sex. 

How often can I take the morning after pill?

It is safe to use the morning after pill more than once in a menstrual cycle if you need to. But there has to be at least a five-day gap between  pills, or they might not work.

You should not use the morning after pill as your normal contraception. There are other methods of contraception that are better for regular use.   
 

What are the morning after pill’s side effects?

The morning after pill is very safe and rarely has serious side effects. The most common side effects are: 

•    headaches 
•    stomach cramps (similar to period pains) 
•    feeling sick.

If you vomit within two hours of taking the morning after pill, it might not work. You will need to take another pill. Speak to a healthcare provider for more advice. 

What are the advantages and disadvantages of using emergency contraception?

Advantages include: 

  • the morning after pill and the copper coil are the only contraception options that can prevent pregnancy after unprotected sex
  • both options are safe and don’t have any serious side effects 
  • some emergency contraceptive pills are safe to take while breastfeeding, speak to a healthcare professional about your options 
  • if you use the IUD as emergency contraception, you can leave it in and use it as your regular contraceptive method if you want to 
  • an IUD can be fitted four weeks after giving birth, and it’s safe to use if you’re breastfeeding.  

Disadvantages include: 

  • emergency contraception does not protect you or your partner from STIs, including HIV – only condoms prevent pregnancy and STIs 
  • they don’t work if you take them too late (the morning after pill only works if you haven’t ovulated already) 
  • they can cause some mild side-effects (such as headaches, stomach aches and nausea)  
  • the morning after pill can make your next period early or late, and more heavy and painful 
  • the morning after pill cannot be taken if you have allergies, severe asthma, are on some types of treatment for HIV, epilepsy or tuberculosis, or take some herbal medicine  
  • if you have unprotected sex again after taking the morning after pill, you can still get pregnant, so use another form of contraception next time you have sex
  • the morning after pill isn’t designed to be a regular form of contraception. Other methods such as the implant, injections or contraceptive pill are better for long-term protection.
Advantages and disadvantages of the IUD

What do I do if I’ve had unprotected sex?

As well as accessing emergency contraception, it’s a good idea to test for STIs, including HIV. It’s also worth thinking about what kind of birth control would be best for you in the future. 

Let's talk about emergency contraception!

Here are a few questions to help kick-off discussions on the issues you need to talk about! You can share them on social, on WhatsApp or just get talking.

See full details for this resource
See full details for this resource
See full details for this resource
See full details for this resource

Test your knowledge of preventing pregnancy

Preventing pregnancy quiz

Join the conversation

Looking for more detailed information?

Will emergency contraception harm my chances of having a baby later on?

The morning after pill does not affect your ability to get pregnant in the future.

If you use an IUD as emergency contraception, it will prevent pregnancy for as long as you keep it in (for up to five years). 

What is the difference between emergency contraception and abortions?

The morning after pill is different from the abortion pill. Emergency contraception stops an egg being released so it can’t be fertilised, and this prevents a pregnancy from happening. An abortion ends a pregnancy that has already happened. 

Emergency contraception won’t work if someone is already pregnant, and it won’t harm an existing pregnancy. 

Can I make a homemade morning after pill?

No – homemade contraceptives of any kind don’t work and they can be dangerous. There is also no need to do this, as the morning after pill is usually available from pharmacies, sexual health clinics and doctors. 

How do I know if the emergency contraception worked?

If your period comes around the time that you would expect, this normally means that you’re not pregnant. 

However, if your period is lighter or shorter than usual, then you should take a pregnancy test or speak to a healthcare provider.

What advice can I give to someone about emergency contraception?

The best thing you can do is to give them clear and accurate information, which you can find on this page.  

When you think the time is right you could also talk to them about their birth control options.  

Remember, the most effective way to support someone who is thinking about using any form of birth control is to respect their decisions, be open and do not judge.  

If they feel embarrassed about discussing sex with you, give them details of a friendly healthcare professional, a helpline or factual online resources, like this website. 

Join the conversation

Next: Abortion

Explore more

Still can't find what you're looking for?