+ May protect against some STIs and cancer of the cervix.
+ Only needs to be used when having sex.
+ Can be put in before sex.
- Putting it in can interrupt sex.
- Must be fitted by a doctor or nurse in the first place to make sure it's the right size.
- Can cause cystitis.

No STI protection
Only barrier contraception, such as condoms, prevent STIs from being passed on.
Any sexual contact without a condom may pass on STIs.
Some things make the injection less effective. That means it doesn't work properly!
-- It must be left in for 8 hours after having sex. Need to use more spermicide if have sex again, or more than three hours after putting it in.
-- If the woman gains or loses more than 7lbs in weight, has a baby, or has a miscarriage or an abortion, the fitting of the diaphragm/cap should be checked by a doctor or nurse to ensure that it still fits..
Protect Yourself
A flexible rubber or silicone dome-shaped device which is used with spermicide. It is placed in the vagina to cover the cervix each time a woman has sex.
Stops sperm from entering the womb.
The Cap is 92-96% effective when used correctly.