A diaphragm (say: die-ah-fram) is a shallow cup made of latex or silicone (see picture 1.) It is used for birth control. Your doctor will measure your vagina to find the right size for your diaphragm.

For good birth control, your diaphragm (see picture 1) has to fit well. Your doctor will measure your vagina to find the correct size and fit for you. Your doctor or a nurse will teach you how to put ...