Male latex condoms can reduce your risk of getting an STD if used correctly (see the box below). Be sure to use them every time you have sex, during all types of sex, including vaginal, anal and oral sex. Female condoms aren't as effective as male condoms, but should be used when a man won't use a male condom.
Remember, though, that condoms aren't 100% safe and can't protect you from coming in contact with some sores, such as those that can occur with herpes, or warts, which can occur with HPV infection.