Many sexually transmitted diseases (STDs) have no symptoms. That's why many people don't even know they have an STD, because they feel and look totally healthy. But some STDs do produce symptoms. The most common ones are:

Girls: 

• Pain or burning when you pee or have sex
• Bleeding between periods
• Red, irritated, or swollen genital skin
• Unusual discharge from the penis or vagina
• Unexplained bleeding during intercourse
• Bumps, sores, or rashes in the genital area

Boys:

• Pain or burning when you pee or have sex
• Red, irritated, or swollen genital skin
• Unusual discharge from the penis
• Bumps, sores, or rashes in the genital area

If you have any of these symptoms, get tested right away.

If you are engaging in vaginal, anal or oral sex, you need to get tested once a year. Since most STDs have no symptoms, regular testing can help you detect, treat or cure STDs before they cause long-term harm to you or your partners.

Most clinics and hospitals offer free or low-cost STD testing. To find a clinic near you, check the yellow pages under "Clinics" or "Family Planning," or locate a Planned Parenthood Health Center near you at 1-800-230-PLAN (7526). You can also find a confidential testing center near you by clicking here.

Got a question about STDs? Call the CDC's national hotline at 1-800-227-8922, open 24/7.