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Ask Dr. K

If I received an unprotected blowjob from an unknown person, am I at risk for getting an STD? If so, where should I get tested? Do I need to wait a certain period of time before getting tested?

Receiving oral sex can expose you to some STDs, including chlamydia, gonorrhea, herpes and syphilis. Because you are sexually active, it is important to have a routine STD screening every three to six months. There are different latency periods for each STD I mentioned (see below) so it may be best to go in as soon as you can, and then discuss with your provider when would be a good time to return.

Chlamydia (1-3 weeks)
Gonorrhea (2-5 days men / 10 days women)
Herpes (Extremely variable, often asymptomatic)
Syphilis (2-12 weeks)

Remember to be clear with your provider about what activities you have engaged in so he or she can provide you with the best information about the particular tests you may need.

In San Francisco, you can be seen at City Clinic on 7th street ( or at Magnet in the Castro at 18th (

To your health,
Dr. K

Last modified on Thursday, November 19, 2009.
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