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STD Likelihood Based on Brief Fellatio?

Thank you in advance for your response.  I'm hopeful that you can answer a few questions regarding STD transmission likelihood.  Rather than using actual dates, I'll just give the timeline of events.

On Day 1, I performed brief fellatio.  I was engaged in fellatio for a total of 15-20 seconds before I realized the risk and stopped.  His penis was clean, with no sores or marks.  He did not ejaculate and there was no pre-*** when I started.  

On Day 3, Day 10, and Day 14 I had sex with my girlfriend of 4 years.  On two of those occasions I performed cunnilingus on her.  

My questions are:

-What is the chance that I contracted an STD (specifically Syphilis, Hepatitis B, HIV, or Herpes) from that one encounter above?  I have shown no symptoms of any STD since this encounter, but could I still possibly have one and passed that on to my girlfriend in such a short period of time while being asymptomatic?

-Can you contract syphilis and not develop a chancre?  If so, are you able to spread syphilis if you don't have a chancre?

-Based on the scenario above, is HIV infection realistic?  What about Hepatitis B?

-If I contracted HSV-2 through this encounter, could I have passed that on to her (genitally) in such a short period of time despite not having any symptoms?

-Would testing for any of the STDs I mentioned above be reliable at this time?  If not, how long should I wait?

Thank you for your help.
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Avatar universal
A related discussion, Brief receipt of Fellatio was started.
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I really found this post helpfull
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300980 tn?1194929400
MEDICAL PROFESSIONAL
Most peole who deveop syphilis deveop a lesion at the site of contact.  On average this happens within 21 days.

That you have HSV-1 reduces but does not eliminate your chance of getting HSV-2.  Hsv-2 casues VERY few oral lesions however.

Once again, your risk is minimal.  Time for you to get over it  EWH
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Avatar universal
Thank you for the response.  I feel much more confident that I didn't catch an STD as a result of this encounter.  

I had read that Syphilis is most contagious within the first few days of infection.  Does that mean "within the first few days of developing a chancre as a result of an infection?"  You mentioned that I would have developed symptoms from HSV or Syphilis by now if I was going to.  Is it typical to not develop symptoms? Because I have no symptoms (lesions), even if I were infected with one or the other, passing them on is not possible?

Also, could you clarify the possiblity of contracting HSV-2 if I already have HSV-1?  Can you have both types in the same location (orally)?

Thank you again.
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300980 tn?1194929400
MEDICAL PROFESSIONAL
Your question boils down to what is the risk that you got some sort of STD, including HIV from performance of oral sex on a high risk male partner 3 weeks ago and could you have since transmitted it to your partner.  The short answer is little of no risk.  let me elaborate.

Oral sex is an inefficient way to get an STD of any sort.  Your major risk from performance of oral sex is have gotten pharyngeal gonorrhea.  Chlamydia does not cause throat infections, HIV is not transmitted this way and lesion diseases are transmitted by lesion contact and you saw no lesions.   Of the STDs possibly transmitted through oral sex, only syphilis and HSV would be expected to be symptomatic and if you were going to develop symptoms from this, you would have done so by now.  

Regarding specific answers to your questions:
1.  See above.  Very, very little risk.  If he had gonorrhea you might have gotten it an i might have passed it on to your GF.  the others are really not worth considering.
2.  Syphilis is really not much of a consideration.  The disease is very rare and your partner did not have a chancre.  It takes direct lesion contact to spread syphilis.
3.  HIV risk -no.  Hepatitis B - very, very low probability
4.  See above.  No real risk for HSV.
5.  Testing for gonorrhea and syphilis would be accurate at this time.  There is really little indication for other testing.  

Hope this helps.  EWH
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