How it works:

A diaphragm is a flexible plastic cup that you fill with spermicide and place over your cervix prior to having sex. It keeps sperm from entering your uterus and fertilizing an egg. The diaphragm is 94% effective at preventing pregnancy when used perfectly. However, in real life 12 in 100 will get pregnant when not used correctly every time before sex, reducing its effectiveness to 88%.


  • Non-hormonal

  • Effective right away

  • Reusable

  • Easy to keep private

  • Can stop using it on your own


  • Must be used every time you have sex

  • Must plan ahead to place before having sex

  • Must be placed correctly to ensure a good fit

  • Doesn’t protect against sexually transmitted infections (STIs)