Thank you for having a site like this and also for the work that you do.

Nearly 5 days ago while intoxicated I cheated on my pregnant girlfriend by receiving unprotected fellatio for 3-5 minutes.  The girl is an old friend whom i have had past relations with who is fairly sexually active and single.  With all i have read, and given that I am symptom free still to this point 5 days later, is there reason to worry?  I am so afraid of hurting her or our unborn child with my stupid mistake.  I have managed to avoid intimacy to this point as I wait to see if symptoms develop but nothing so far.  To your knowledge how might i expedite test results for STI's i may have been exposed to in order to move on from this anxious hell?

Assuming "all I have read" includes scanning discussions on this forum, you should have seen our consistent advice that oral sex is safe sex. It's not completely free of risk, but the overall chance of any STD is far lower than for unprotected vaginal or anal sex, with low risk for all infections and virtually zero risk for some. The virtually zero risk group (perhaps truly zero risk) includes HIV, chlamydia, herpes due to HSV2, and trichomonas, and probably viral hepatitis. 

That leaves HPV, syphilis, herpes due to HSV1, gonorrhea, and nongonococcal urethritis (NGU). HPV can and should be ignored, since we all get it anyway and oral to genital transmission is uncommon, so this event doesn't make your risk any higher than it was anyway. Also ignore syphilis, which is extremely rare in women like your oral sex partner. Gonorrhea usually causes obvious symptoms (discharge, painful urination) within 5 days, so you're probably home free on that one. HSV1 can be asymptomatic, and NGU symptoms typically start later, usually 7-10 days after exposure, so you'll need to remain on the lookout for penile blisters/sores, discharge, etc. However, even these are uncommon after any single exposure, so the odds are strongly in your favor. 

Should you be tested? Hard to say:  the only ones for which there are reliable tests before symptoms are gonorrhea (and chlamydia, syphilis, and HIV -- but we already touched on why testing isn't necessary for them). So I recommend just being on the lookout for discharge, painful urination, or penile blisters or open sores. If none of these have appeared after 2 weeks, you can consider yourself in the clear. Indeed, even before then, the odds are strongly in your favor. To put it in personal terms, If somehow I were in your situation, I probably would have held off on sex at home unti about this time (5-7 days), but then would resume.

I hope that helps. Let me know if anything isn't clear.

HHH, MD

My gf also has HSV1, which is oral as I understand.  Yet I could get that on my penis from her if we aren't careful but there would be little chance of recurrence?

Yes, genital herpes due to HSV1 usually occurs from oral sex. And it is also true that recurrent outbreaks are uncommon in most cases of genital herpes caused by HSV1. But that's not universally true:  some people have fairly frequent outbreaks. Half of all adults have positive blood tests for HSV1, even if they have no history of known oral herpes. So you could consider getting tested:  if already positive, you're immune and won't catch it again. In the meantime, though, it would be smart to avoid your partner performing oral on you (or kissing you) whenever she has an apparent outbreak (cold sore, fever blister, or any mouth area sore).

That completes the two follow-up comments and replies included with each new question, and so concludes this thread. I hope the discussion has been helfpul. Best wishes and stay safe!