Cervical Caps

The cervical cap is a birth control device that functions similarly to a diaphragm, except that it is smaller and fits tightly over the cervix. Made of latex, the cervical cap stays in place through suction and acts as a barrier to prevent sperm from entering the uterus, thus preventing fertilization. According to statistics, cervical caps are 84 to 91 percent effective as birth control for women who have never given birth and 68 to 74 percent effective for women who have already had children.
Cervical caps are generally used with spermicidal jellies or creams that kill sperm and can be inserted many hours before having intercourse. After having sex, it is important to keep the cervical cap in place for at least 8 hours to ensure its maximum protection against fertilization. Cervical caps are convenient to carry because they are lightweight and small. Using cervical caps in no way compromises your ability to become pregnant in the future.

What to Look for

Cervical caps are designed to be specially contoured and fitted to your body in a clinic. Your health practitioner will show you how to insert and remove the cap easily. Cervical caps can be inserted up to 48 hours before having intercourse and should be one-third filled with spermicide. Practice inserting and removing your cervical cap before sex so that it becomes natural and easy. Once you remove the cervical cap, wash it with lukewarm water and a mild soap. You can also soak it in diluted lemon juice to eliminate odors. Make sure you dry the cervical cap thoroughly before placing it in its case.

Common Pitfalls

Using a cervical cap does not protect you against sexually transmitted infections or diseases such as HIV, hence it is important for your partner to wear a condom during intercourse. Cervical caps can also be dislodged during intercourse, so it is important to have extra protection just in case.
Check the position of the cervical cap before and after intercourse to make sure that it is in place. Make sure your cervical cap fits tightly; otherwise, it will not be effective, since sperm will find their way inside a loose cap. Do not use a cervical cap if you are menstruating. Do not put in too much spermicide since the cap can slip off the cervix if there is more lubrication than necessary.
Oil-based lubricants such as Vaseline or edible oils can damage a cervical cap. If you need extra lubrication, ask your health care provider which brands are best for use with the cap. Douching weakens the effects of spermicide, so wait at least 8 hours before doing so to make sure that all sperm has been eliminated.
Some people can have an allergic reaction to cervical caps, especially those who are sensitive to rubber or spermicide. If you have experienced toxic shock syndrome, do not use a cervical cap.
You must have your cap refit if you have given birth or had an abortion, since your cervix will have changed size. One final word: check your cervical cap occasionally for holes by holding it up to the light or filling it with water.