It's normal to have lots of questions about what happens when you take plan B.
You might want to know how you're going to feel afterwards, if there are any symptoms you should know about, and what happens to your body when you take plan B.
In this section, we want to put you at ease by answering some of these questions. You'll also find out what to do if you're looking to talk to someone about emergency contraception and where to turn if you want more reassurance, help or advice.
What Happens to my Body?
Most women won't experience any dramatic side effects from taking plan B. Typically, you'll be able to carry on with your usual activities. If you do have a headache or feel sick, it should pass fairly quickly. If it doesn't, consult your doctor.
How Do I Know plan B Worked?
The only way of knowing plan B has worked is when you get your next period. Keep in mind that when taken correctly within 72 hours of unprotected sex, or an accident with your contraceptive, plan B is 85% effective.
If your period is more than 7 days late, or unusually heavy or light, or if you're still worried, call your doctor or local health clinic (your CLSC in Quebec) for a check-up to make sure you're not pregnant. You might feel anxious about an unplanned pregnancy or about having had unprotected sex, so don't hesitate to get in touch with someone who can help.
I Think I Might Be Pregnant
Many women find their period comes early or on time, so they don't have to worry about pregnancy. If your period is late, it could be because you took plan B early on in your cycle and it has delayed ovulation.
If your period is more than 7 days late and you think you might be pregnant, call your doctor or local health clinic (your CLSC in Quebec) for a pregnancy test.
One of the quickest and easiest ways to test for pregnancy is to buy an early pregnancy test (EPT) at the pharmacy. You can ask the pharmacist how to use the kit to get the best results.
If you have continued to use regular hormonal contraception such as the birth control pill after taking plan B and you do not get your period in your pill-free week, see your doctor or local health clinic (your CLSC in Quebec) to make sure you're not pregnant.
What Do I Do About Contraception Now?
If you want advice on long-term methods of contraception, see your doctor or local health clinic (your CLSC in Quebec). They'll be happy to help you.
Restarting your birth control pill
Is There Somewhere Else I Can Turn To?
If you've already taken plan B and still have some questions, you can call us toll-free, or email us for more info:
You can also get immediate information from the places listed below about anything to do with "the morning-after pill," buying emergency contraception at the pharmacy, unplanned pregnancy and STDs/STIs.
Safe Sex Advice
plan B doesn't protect against HIV/AIDS and other sexually transmitted diseases or infections (STDs/STIs). If you've had unprotected sex, or your contraceptive failed, you should also think about the risk of STDs and STIs.
If you're embarrassed talking to your own doctor about this, you can go to a walk-in clinic that specializes in family planning. They'll give you all the tests needed and provide the most suitable treatment. Anything you tell the doctor or nurse at these clinics is confidential and they will not write to your own doctor or contact anyone else without your permission.
Taking plan B will not affect the results of any tests you have, but you should tell the clinic that you've taken it.
For more information on safe sex and contraception, see our More To Know section.