Diaphragm

How effective?

Latex types are 92% to 96% effective if used correctly. Between four and eight women in 100 will get pregnant in a year. Silicone caps are less effective.

How it works

A flexible latex (rubber) or silicone device, used with spermicide, is put into the vagina to cover the cervix. This stops sperm from entering the uterus.

Advantages

The diaphragm can be put in any time before sex. It may protect against cancer of the cervix and stops sperm from entering the uterus.

Disadvantages

Putting it in can interrupt sex. You will need to measured and fitted for diaphragm or cap. Cystitis can be a problem for some users. It can take time to learn how to use it correctly.

Comments

You need to know the correct size and fitting should be checked every 12 months and if you gain or lose more than 3kg, have a baby, miscarriage or abortion.