First, something like 80% of the population is infected with HSV1. This is the virus that causes cold sores. This is NOT something to worry about. You can acquire HSV1 genitally, however it is rare, and the outbreaks, if they occur, are much less severe and more widespread than it's counterpart. HSV2 (genital herpes). Genital Herpes is VERY rarely spread orally, if at all.
From an STD perspective Oral sex is considered safer sex, with only a theoretical risk for HIV (Note: NO confirmed cases of HIV through oral sex exist), a low risk for Gonorrhea and Syphilis. If you are concerned of having contracted gonorrhea in the throat, you will need to let your physician know this as they will need to do a throat swab. Syphilis is extremely rare in homosexuals and this is also HIGHLY unlikely. The good news the only two STDs that you really put yourself at risk for are rarely transmitted by oral sex, and if they are and are identified early are easily treated. However, your course of antibiotics may have already taken care of any bacterial infection that may have been present prior to testing. I would expect your STD screening test to come back with negative results. I would not worry.
Thanks. The culture taken by the ENT was a throat swab - he said he sent it out to be tested and see if anything comes back - he didn't order it for something specific. I didn't tell him about this sexual encounter as he's not my gyno and the last time I saw him ended up being for a random fluke bacterial infection (which was causing the 'lump' feeling 6 months ago). It's my assumption that if the test/lab he sent that first culture to can test and find some uncommon bacterial infection, hopefully it'll flag a common STD. If not, I do plan to see my regular gyno once the antibiotics are finished.
To clarify this was a female (me) to male encounter, not a male to male encounter - not sure if that increases my syphilis risk by much or not.
Either way I will try to arm myself with the knowledge that STDs are rarely passed on through oral encounters and try to put my mind at rest until I can see my regular doctor.
I mistyped. Syphilis is rare in heterosexuals. It is much more common in the bi and homosexual community.