The implant releases progestin, a hormone that keeps your ovaries from releasing eggs and thickens your cervical mucus — which helps block sperm from getting to the egg in the first place.
If you're a busy person who doesn't want to worry about remembering birth control, the implant just may be for you. Once it's in, it lasts for up to three years.
There are no packages or prescriptions to pick up at the pharmacy, so there's nothing that could get lost or forgotten.
No one can tell when you have the implant. There's no packaging, and nothing you need to do just before you have sex.
You should be able to get pregnant any time after the implant is removed. So don't take any chances. If you get it taken out, but you're not ready for a baby, protect yourself with another method right away.