The diaphragm is a shallow cup made of soft silicone that covers your cervix during sex to prevent pregnancy.
The diaphragm creates a barrier that covers your cervix. It must be used with spermicide (a cream or gel that kills sperm) to work properly. The diaphragm keeps the spermicide in place to stop sperm from moving and reaching an egg.
The diaphragm is 95% effective at preventing pregnancy when used properly. Make sure to follow the directions carefully and use one every time you have sex.
Diaphragms come in different sizes, so you will need a prescription from a nurse a doctor to ensure proper fit.