What about hormone shots and implants?

The hormone shot is an injection (typically in your arm). You have to visit your doctor for each shot. One shot prevents pregnancy for 3 months. Women who have the shots may have some side effects, such as headaches and changes in their periods, moods and weight.

The hormone implant is a thin, flexible piece of plastic that is about the size of a matchstick. Your doctor inserts the implant under the skin of your upper arm. One implant prevents pregnancy for up to 3 years, but your doctor can remove the implant at any time. Side effects of the implant include irregular bleeding or spotting, or periods that are lighter or heavier than normal. Some women stop having periods entirely.