Birth Control: How to Use a Diaphragm
A diaphragm is a birth control device that blocks sperm from fertilizing an egg. It is made of rubber and shaped like a dome. It fits inside a woman's vagina and covers the cervix (the opening of the uterus); a firm, flexible rim keeps it in place. A diaphragm is always used with a sperm-killing cream or jelly (spermicide) to prevent pregnancy.
Proper diaphragm use
Replacing a diaphragm
With good care, a diaphragm should last 1 to 2 years. You should be refitted for a diaphragm if you gain or lose a lot of weight, have abdominal surgery, or have a baby.
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