A diaphragm is a silicone device shaped like a shallow cup that you insert into your vagina to prevent pregnancy.
Diaphragms and cervical caps are vaginal barrier methods of birth control. Each type is manually inserted into the vagina and placed over the cervix, to prevent sperm from entering the uterus and ...
Spermicide is a gel or cream you put into your vagina before sex that's designed to prevent sperm from fertilizing an egg. It's 72% to 82% effective.