CERVICAL CAP
This is a small rubber device similar to a diaphragm. It can be used without any spermicidal cream or jelly because it fits very tightly over the cervix preventing the sperm from swimming to the egg. This tight fit might be bad for the cervix and might increase the problems with Pap smears. It is not widely used but is a good method for some women. It may be hard to find a doctor or clinic who can fit you with one.
Advantages of the Cervical Cap Can be left in place for up to 48 hours, allowing spontaneous protected coitus. Requires only one small application of spermicide inside the cap at time of insertion. Less messy than the diaphragm, more aesthetic for the user.
Smaller than a diaphragm and less noticeable to either partner. Good alternative for women who cannot use the diaphragm because of poor vaginal muscle tone. Use of cervical caps may assist in avoiding urinary tract infections associated with diaphragm use. Sturdier than a diaphragm.
Less spermicide is used than the diaphragm, allowing more pleasant oral sex. Fewer and less serious side effects than the pill or IUD.
It is likely that cervical cap use offers similar noncontraceptive benefits as does diaphragm use; that is, protection against some sexually transmitted diseases.
No reports of cases of toxic shock syndrome have been associated with cervical cap use. Disadvantages of the Cervical Cap
Sometimes more difficult to insert or remove than a diaphragm. Can be dislodged from the cervix during sex.
Four percent of women using the cervical cap in clinical trials had an abnormal Pap smear after 3 months of use, as compared to 1.7% among diaphragm users. After 6 months cervical cap usage, the rates of Pap smear change were about the same for both the cap and diaphragm.
Here is a typical high quality Diaphragm
