Getting a diaphragm requires going to the doctors office/clinic. During the fitting, a fitting ring is inserted into the vagina. The largest ring that fits comfortably is usually the one chosen. Different types of diaphragms are available. You and your medical provider can decide between coil, flat, or arcing spring diaphragms. Diaphragms can be inserted up to 2 hours before sex because the spermicide is only effective for 2 hours. If you insert your diaphragm more than 2 hours before intercourse, you will have to insert more spermicide into your vagina. To do this, leave your diaphragm in and use an applicator to add more spermicide directly into the vagina. Every time a woman has intercourse, she will need to add more spermicide to her vagina with an applicator. To increase effectiveness, practice inserting your diaphragm before sexual play with a partner. Your medical provider will show you how to place it correctly. Insertion can be awkward at first, but becomes easy with practice. You can try it standing with one foot on top of a chair, sitting with your knees apart, or lying down with your knees bent. Before inserting the diaphragm, place a tablespoon of spermicidal jelly or cream on the inside of the dome. Squeeze the rim of the diaphragm and keep the spermicide facing up. Use one hand to spread your lips. The other hand can slide the diaphragm into your vaginal canal and over your cervix. You can check its placement by feeling for your cervix through the rubber dome. Your diaphragm should be left in for 6-8 hours after the last act of intercourse. You can remove the diaphragm by hooking your finger around the front rim and pulling down and out. If you have long nails, be careful not to tear the rubber.
A diaphragm is a thin rubber dome with a springy and flexible rim. It is inserted into the vagina, fits over the cervix and is held in place by vaginal muscles. A diaphragm holds spermicide in place over the cervix (opening to the uterus). Spermicide kills sperm, preventing fertilization. After intercourse, it should be left in place for 6-8 hours. Diaphragms are 86-94% effective as birth control.