What is it?
The diaphragm is a latex or silicone dome with a flexible steel ring around its edge. A health care professional must do a pelvic exam in order to fit the diaphragm.
How does it work?
When positioned properly in the vagina, the diaphragm blocks the entry of sperm to the uterus and the fertilization of the egg.
To learn more about the diaphragm, visit Sex and U
Does it prevent sexually transmitted infections?
Remember that most birth control or contraceptive methods will not protect a person from sexually transmitted infections (STIs). To reduce the risk of STIs, including HIV, use a condom with another method of contraception. This is referred to as dual protection.
To be effective, birth control must be used correctly and consistently. If you want to prevent pregnancy, choose a method that you and your partner will use every time you have intercourse.
Talk to your health-care provider or visit a sexual health clinic to find out what might work best for you and your partner.