4. Cervical cap
The cervical cap (sold by the brand name FemCap within the United States) is a soft silicone cup located deep within the vagina. It covers the cervix in order to prevent sperm from entering an egg.
The efficacy of cervical caps differs according to the sources, but Planned Parenthood estimate that its effectiveness ranges from 70-85 percent. It is not a protection against STIs.
how to prevent pregnancy ?
Contraceptive sponges are an effective method for birth control one can purchase without a prescription. It is made of polyurethane foam and containing spermicide sponge is inserted deep into the vagina, blocking access into the uterus.
When used alone it is up to 88 percent Trusted Source effective, but combining it in conjunction with a condom lowers the risk of having a baby and STIs.