IUDs (intrauterine devices)
An IUD is a small, T-shaped piece of plastic with copper or a hormone that a doctor places inside the uterus.
There are 2 kinds:
- Copper IUDs release a small amount of copper to prevent sperm from fertilizing an egg. They can last for up to 10 years.
- Hormonal IUDs release a small amount of a hormone called levonorgestrel to prevent pregnancy. They’re available in different doses and last from 3 to 8 years, depending on the dose.
IUDs are very effective at preventing pregnancy. You don't feel the IUD when it’s in place — and there's nothing to do or remember once it's there.
IUDs don't protect you or your sex partner from STIs. But you can use a condom with your IUD to help protect against STIs.
If you want to have your IUD removed — for example, because you want to get pregnant — a doctor can remove it. Read more about IUDs.
Hormonal methods
Most hormonal methods of birth control work by preventing the ovaries from releasing an egg each month. They also cause other changes that make it less likely that you'll get pregnant.
Hormonal IUDs are a type of hormonal birth control. Other hormonal methods include:
- Implant (a small rod put under the skin) — can last up to 3 years
- Shot — given every 3 months by a doctor or nurse or by the person using the shot
- Patch — worn on the skin and replaced once a week, with 1 week off every month
- Ring — put in the vagina for 3 weeks, removed for 1 week, and then replaced with the same ring or a new ring, depending on the type
- Birth control pills — taken every day
These methods don't protect you or your sex partner from STIs. But you can use condoms to help protect against STIs while using hormonal birth control.
Keep in mind that some hormonal methods take more effort to use, and this can make it harder to use them correctly. For example, you have to remember to take birth control pills every day — but once an implant is in place, it lasts for up to 3 years.
If you're interested in a hormonal method of birth control, talk with your doctor or nurse about which kind is best for you. Read more about hormonal birth control options.
Barrier methods
Barrier methods work by preventing the sperm from getting to the egg. Common barrier methods include:
- External (male) condoms (worn on the penis)
- Internal (female) condoms (placed inside the vagina)
- Diaphragm (placed inside the vagina)
- Cervical cap (placed inside the vagina)
- Sponge (placed inside the vagina)
- Spermicide (a gel, cream, foam, or other substance that stops sperm from reaching the egg), which can be used on its own or with an external condom, diaphragm, or cervical cap
- Vaginal pH modulator (a gel that changes the vagina’s acidity to stop sperm from reaching the egg), which can be used on its own or with an external condom, diaphragm, or cervical cap
External condoms are also very effective at preventing HIV and reducing the risk of other STIs when you use them correctly every time you have sex. Get tips on how to use a condom correctly.
Internal condoms may help prevent HIV and other STIs. Diaphragms, cervical caps, sponges, spermicides, and vaginal pH modulators don't protect against STIs.
Read more about barrier methods.
Fertility awareness-based methods
Using fertility awareness-based methods (FABMs) is sometimes called natural family planning. With FABMs, you learn which days pregnancy is more likely to happen. If you want to prevent pregnancy, you don’t have sex on those days — or you use another method of birth control.
FABMs work best if you have regular periods. It's important to know that FABMs are not usually as effective at preventing pregnancy as other forms of birth control, like IUDs or hormonal methods.
You can also use FABMs when you’re trying to get pregnant. Read more about fertility awareness-based methods.
Emergency contraception
Sometimes you may forget to use birth control — for example, you could miss a pill or shot. And sometimes birth control methods can fail, like if a condom breaks. If this happens, you may want to use emergency contraception to help prevent pregnancy.
There are 2 options for emergency contraception:
- Copper IUD — A doctor will need to place the IUD inside your uterus within 5 days of unprotected sex.
- Emergency contraception pills (ECPs, also called the morning-after pill) — You'll need to take ECPs as soon as possible within 5 days of unprotected sex. The sooner you take them, the more effective they are. You can buy some ECPs at a drugstore without a prescription. To get other ECPs, you need a prescription from a doctor.
Taking ECPs won’t harm a pregnancy if you're already pregnant. Emergency contraception won't protect you from STIs, so consider getting tested for STIs if you didn't use a condom — or if the condom broke.
To learn more, you can:
Permanent birth control (sterilization)
Sterilization is a permanent method of birth control. This is an option for people who are completely sure they don’t ever want to get pregnant or cause a pregnancy in the future. There are different types of permanent birth control procedures:
- Vasectomy: This means cutting or blocking the tubes that carry sperm to the outside of the penis.
- Tubal ligation: This means cutting or blocking the tubes that carry eggs into the uterus.
Read more about permanent birth control (sterilization).