Diaphragm - a piece of thin round rubber that is inserted into the vagina and held in place by the muscles of the vagina. It prevents sperm from entering the uterus and must be left in place at least 6 hours after intercourse and should be used in conjunction with spermicide. It can also be inserted 6 hours prior to intercourse. A prescription is necessary as diaphragms come in different sizes and a doctor will help determine which size is best.
Diaphragms are 81-95% effective in preventing pregnancy but will not protect against STD's. A diaphragm should be replaced very 6 months to a year and the size must be changed after a fluctuation in weight of 10 pounds or more. Women who are breastfeeding can safely use a diaphragm and most women experience no health concerns. Some women are however more likely to experience bladder infections if using a diaphragm and it is possible to get toxic shock syndrome from leaving a diaphragm in the vagina for too long.