1. There is no research on this, but probably at least half of all people with active, transmissible oral syphilis do not notice symptoms.

2. The vast majority of sex workers do not have oral gonorrhea. Even if they have it, usually it is not transmitted by a single oral sex event. The odds you caught gonorrhea from this event probably was under one chance in many thousand. Probably NGU from oral sex occur with similar frequency.

3. Correct about onset of gonorrhea symptoms. There are no data on how quickly it might be transmissible to other partners. Probably 19 hours is too soon -- I would estimate 24-36 hours. However, if you have a regular partner you are concerned about, I would advise no sex for several days -- at least until 5 days, at which time absence of symptoms will be good evidence you don't have it.

4. NGU from oral sex may not be transmitted at all to sex partners. It is believed many such infections are due to normal oral bacteria, in which case there may be no risk to partners.

I agree that if you have no symptoms in the next few days, not eating is needed. But of course you are free to be tested if you wish.

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD

Meanwhile i think it’s a good idea to abstain for a few days. I will relax and keep an eye on myself (without excessively squeezing my penis) for any symptoms!

I would tend to bet on myself not being infected anything. But just a question here: From your experience, not necessarily patients attending to your clinics (can be the people posting here?). how often do you see people infected with anything, NGU or whatever it might be, resulted from just unprotected oral sex? Like 1 out of a thousand inquiries?

After this, please kindly leave this chat open for a few more days (just in case!).

Unfortunately there are no good data on the actual frequency of NGU, gonorrhea, or herpes due to HSV1 from oral sex. (Those are the three main ones that can occur.) To know the numerical risk it would be necessary to identify exposed persons -- thousands of them -- and then examine and test them all a few times over the next few weeks. No such research is feasible. The best we can do is estimate the likelihood potential source partners -- say sex workers in a particular city -- have transmissible oral infections; and then how many men they expose over time. Also almost impossible to know or even study.

What is known is that the large majority of penile partners in oral sex do not acquire these infections. After guessing at the number of the oral partners who were infected, it is clear that the large majority of such events don't result in transmission. Even this is further complicated because so many exposures do not include ONLY oral sex:  most persons diagnosed in STD clinics who had oral sex also had unprotected vaginal exposures.

On thi forum, we often have used figures like one chance in a thousand or even lower figures. (For HIV CDC once estimated 1 chance in 20,000 if the oral partner had untreated HIV. That's equivalent to receiving BJs by infected partners once daily for 55 years before transmission might be likely.) No matter what number is used to guess at the odds, it should not be taken literally. All we really know if that the chances of gonorrhea or NGU in this situation are very low for any single exposure; one chance in a thousand is as good a guess as any.

Sorry for getting so far into the weeks. But perhaps other uses also will find this information interesting and helpful.

After the test I masturbated just an hour ago (almost 7 days since exposure), ejaculated on tissues, I saw a very tiny bit of blood (!?) As you know sperm would be in a gel/semi liquid texture when it’s fresh,  I’m not even sure if it’s blood, or if it’s pink/brown, it’s simply too tiny for me to determine what color it is, especially when it’s flowing down on the tissues and that bit of discolouration gets really thin).

I don’t know what to do now, I had a quick look online it says STI can be a cause. I guess my questions are:

1. How accurate for a 5 days post-exposure DNA test? I used my morning urine for the test. 

2. Would it be possible that the test missed the STI DNA and symptoms arrive now? masturbated exactly 7 days after the oral sex and no ejaculations at all in between. (I don’t think I have any discharge nor urine pain btw).

3. I do have a slight testicle pain from time to time ever since early 2024 as I was diagnosed with acute prostatitis and greenish discharge ( not STI).

I know you’re STI expert not a urologist, so I would like to know what would be the chance here after the test that I’m actually infected with something STI related? 

Other than the tiny bit of blood and this weird sensation of very mild pain from time to time I don’t think I have any other symptoms relating to STI. 

Thanks

1,2. The negative test results were  virtually 100% reliable. No there is no way the test missed gonorrhea or chlamydia.

3. Testicular pain is a common symptom of prostate problems but not newly acquired STIs.

"...what would be the chance here after the test that I'm actually infected with something STI related?" Also zero for all practical purposes. I see no need for any further testing. If you continue to have altered semen appearance for another week or more, see a urologist. But this is not a likely STI symptom; and there simply is no STI transmitted by oral sex that could cause any such problem aside from gonorrhea -- which was 100% excluded by your negative test.