The diaphragm is inserted before intercourse and should not be removed for up to six hours after sex. If intercourse occurs before the six-hour time limit, the diaphragm is not removed and an applicator is used to put extra spermicide into the vagina. Wearing it longer than 24 hours is not recommended. The diaphragm should be checked for holes or tears each time before use. Diaphragms are sturdy but should be replaced every two years.
Birth control is completely in the hands of the woman.
The diaphragm also may provide a barrier to STDs. If used with a condom, the effectiveness rate is almost 100 percent. Occasionally minor vaginal irritation may occur. It cannot be used during menses. If a woman gains or loses 10 pounds or more, her diaphragm must be refitted.