How good is it at preventing pregnancy?

A reasonably effective method, with only 9 in 100 women getting pregnant in the first year

How it's used

In your vagina

How often do I have to remember it

Leave it in for three weeks, then take it out for the fourth week

Side Effects

For the first few months, you may have nausea and breast tenderness

Benefits

• Can make your periods less heavy an less crampy
• Can help clear up your acne
• Lowers your risk of ovarian and uterine cancer"

Women with certain types of migraines, high blood pressure, history of blood clots, or who are both over the age of 35 and smoke are at increased risk of having a stroke or other bad outcomes with this method