Diaphragm ("cap") with spermicide

How reliable is it?
With careful use, two in 100 women will get pregnant in a year. With less careful use, two to 15 women in 100 will get pregnant in a year.

How it works
A flexible rubber device used with spermicide, is put into the vagina to cover the cervix and must stay in for at least six hours after sex.
Must be specially fitted to make sure it is the right size.

Can be put in any time before sex (if more than three hours before, extra spermicide may be needed).
May protect against cancer of the cervix and some sexually transmitted diseases.
There are a variety of types to choose from.

Putting it in can interrupt sex.
Extra spermicide is needed if you have sex again.
Fitting should be checked every twelve months and if you gain or lose more than 3kg (7lbs), or have a baby, miscarriage or abortion.
Offers little protection against sexually transmitted infections.

Some people are sensitive to spermicide.
Cystitis can be a problem for some diaphragm users. Changing to a slightly smaller or softer rimmed diaphragm or cap may help.
Do not leave in for more than thirty hours.

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