I am a male in a long term relationship. Seven weeks ago I had an erotic massage with a female sw. No intercourse, but we had mutual unprotected oral. I have been very anxious and went for testing yesterday. I did an hiv rapid test that was negative. They also did throat swab and urine samples. I am awaiting results. I was also given a rapid syphilis test which produced a faint line reactive . About a half hour later they gave me another syphilis rapid test and it was negative. They are testing it in my blood as well. I’m very anxious. Why would the test first show positive and then negative? I have not had any  signs of syphilis . Some testicle and a little discomfort in penis. What are my risks? The rest of my tests will not be back until next week. Please give me insight? Thank you.

Welcome to the Forum.  Thanks for your questions.  I'll be glad to comment.  Your risk for HIV from the encounter you describe is close to zero.  There has never been a case of HIV proven to have been acquired from receipt of oral sex and the CDC estimates that the risk of performing oral sex on an untreated HIV infected person is less than 1 in 10,000 and that estimate is likely conservative.  When you combine these facts with the fact that it is unlikely that your partner had HIV, your risk is effective zero.---

Thanks so much for the response. I am still a bit confused on the syphilis risk and tests . Would I be a high risk for syphilis with the unprotected oral .? Having a difficult time understanding why I had two different results ? 

Syphilis is relatively rare among heterosexual women, including CSWs and very rarely transmitted by oral sex.  Your risk for syphilis is very, very low.  ---