The morning-after pill following unprotected sex
Emergency contraception can help prevent pregnancy after unprotected sex or birth control failure. Here’s what it is, how it works, and what to expect.
Emergency contraception can help prevent pregnancy after unprotected sex or birth control failure. Here’s what it is, how it works, and what to expect.
Emergency contraception pills are medications you take after sex to help prevent pregnancy. They work mainly by delaying ovulation or preventing an egg from implanting in the uterus. These pills do not end an existing pregnancy and are safe for people who cannot take estrogen-containing birth control.
Although often called the “morning-after pill,” emergency contraception can be effective for up to five days after sex, depending on the type you use. For the best results, take it as soon as possible.
Emergency contraception is not a substitute for regular birth control.
Emergency contraception pills are available in three forms, each with specific requirements and factors to consider.
Most side effects are mild and temporary. You may experience:
The likelihood of experiencing certain side effects depends on what type you take. For example, levonorgestrel tends to cause less nausea and vomiting than the combined pills method. While all forms of emergency contraceptive can cause spotting between periods, ulipristal acetate will cause a delay in your menstrual cycle.
If you have any concerns or severe symptoms, you should contact your health care provider.
Only condoms protect against both pregnancy and sexually transmitted infections (STIs).
A copper intrauterine device (IUD) can be placed within five days of unprotected sex. It is the most effective emergency contraception, especially for people with higher body weight, and can remain in place for up to 10 years.
Placement may cause pain, heavier periods, or cramping. Risks include infection, puncturing the wall of the uterus, or the device coming out on its own. Same-day placement may not be available everywhere.
University of Iowa students can schedule an appointment with Student Health and Wellness through MyChart or by calling 319-335-8394.
The contents of this website are for information purposes only and not intended to be a substitute for professional medical advice, diagnosis, or treatment. Users should not rely on the information provided for medical decision making and should direct all questions regarding medical matters to their physician or other health care provider. Use of this information does not create an express or implied physician-patient relationship.