Having unprotected oral sex, especially with different partners, can definitely put you at risk for getting or giving an STD. Herpes, chlamydia, gonorrhea, genital warts, HIV, and Hepatitis B can all be transmitted through unprotected oral sex. People who have STDs often have no idea they are infected because they look and feel perfectly healthy. The infection can be on the skin of someone's genitals (penis, scrotum, or vulva) or in their semen or vaginal fluids. Also, people who have an infection in the mouth can pass that along to their sexual partners' genitals. 

  The only 100% effective way to protect yourself against STDs is to abstain from oral, anal or vaginal intercourse, but if you decide to have oral sex you need to use protection. For oral sex on a male, use a latex condom to cover the penis. They make flavored and unlubricated condoms for just this purpose. For oral sex on females, either cut open a condom into a square of latex or use a dental dam to put a barrier between her skin and fluids and your mouth. To find out more about STDs and oral sex go to  www.ashastd.org or www.plannedparenthood.org.