Overview

A copper intrauterine device (IUD) is a small, T-shaped plastic device. The copper IUD can be used to prevent pregnancy after unprotected sex. It can be placed up to 7 days after you've had unprotected sex.

A doctor inserts the IUD into your uterus. A plastic string tied to the end of the IUD hangs down through the cervix into the vagina.

A copper IUD used for emergency contraception can stay in place for 10 years. In some cases it can be used longer. Talk to your doctor about how long you can use it. It can serve as a good method of regular birth control.

How can you care for yourself at home?

• You may have some mild cramping and light bleeding (spotting) for 1 or 2 days. Use a hot water bottle or a heating pad set on low on your belly for pain.
• Take an over-the-counter pain medicine, such as acetaminophen (Tylenol), ibuprofen (Advil, Motrin), or naproxen (Aleve), if needed. Read and follow all instructions on the label.
• If you haven't started your period within 3 weeks of having the IUD inserted, get a pregnancy test.
• A string tied to the end of the IUD hangs down through the opening of the uterus (called the cervix) into the vagina. You can check that the IUD is in place by feeling for the string. The IUD usually stays in the uterus until your doctor removes it.
• If the IUD comes out, save it and call your doctor or nurse advice line. Be sure to use another form of birth control while the IUD is out.
• Use latex condoms to protect against sexually transmitted infections (STIs), such as gonorrhea and chlamydia. An IUD does not protect you from STIs. Having one sex partner (who does not have STIs and does not have sex with anyone else) is a good way to avoid STIs.