On Friday and Sunday last I gave unprotected oral sex (cunnilingus), engaged in heavy frottage but no insertion and had condom protected sex with a Brazilian girl I met on a dating app. 

Possibly through the vigour (apologies) of giving her cunninlingus on all parts of her vagina today I've noticed a slight, very minor cut/lesion on that "string like structure underneath my tongue in the centre. I'm just worried about any possible HIV risk from these two encounters especially as I do have a regular partner of whom both myself and her have been tested. 

The girl I met on the app said she was tested a year ago in Brazil though has had 2 partners since during which she says they used condoms. I live in the UK and was a bit worried that our NHS (national health service website which is  trustworthy as it's state rub) on sexual health lists performing cunninlingus as a hiv risk specifically- though I'm aware of the other sti risks and would prefer to avoid them as well..

Thanks in advance 

Oral-vaginal contact (cunnilingus) carries very low risk for all STIs and probably zero risk for some. There has never been a reported, well documented case of HIV transmission, to either partner. Gonorrhea transmissions have occurred from the genital to oral partner, but so rarely that until a study done by Dr. Hook a few years ago, the risk was believed to be truly zero. Oral herpes due to HSV2 is possible, but is exceedingly rare:  almost no oral herpes is caused by HSV2, with almost all due to HSV1 and acquired by kissing. Syphilis certainly is possible, but is uncommon in women in most settings in the Americas and Europe. HPV is possible, but oral HPV rarely causes symptoms and is cleared by the immune system without ever becoming apparent. All things considered, your risk of most or all STIs probably was higher from the condom protected vaginal sex than it was from the unprotected cunnilingus.

The "string structure" under your tongue, i.e. the tongue's attachment to the floor of the mouth, is called the frenulum. It can be traumatized by stretching and may be uncomfortable when that happens. It's not an STI symptom and is not know to increase the risk of catching an STI.

On top of all this, it sounds like your Brazil partner is at pretty low risk. You describe her as having a pretty conservative sexual lifestyle. All things considered, I don't recommend STI testing on account of these events or your symptoms. But of course you are free to be professionally examined and tested if the negative results would increase your confidence that you weren't infected. If so, your local NHS GUM clinic would be an excellent option for expert, lifestyle-sensitive care.

Many health agencies, including NHS's GUM clinics, CDC in the US, and their counterparts world wide, often do not distinguish levels of STI/HIV risk in event of exposure. Oral sex is portrayed as risky in the same way as vaginal intercourse; "any" skin-skin contact is listed as a herpes or HPV risk; and so on. These are simplistic and generally wrong ideas. However, you have to recall that the intended audience for such messages are not likely to read and often would not understand more detailed advice, so it is safer (from a legal standpoint) to just say any sex is risky and leave it at that.

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

HHH, MD

1) Would  slight sore throat and minor stomach cramps a few days later or not any indicators or anything? 

2) Obviously throughout my 20s on these odd one off instances (rare) I tend to worry about hiv in particular after - can I relax about this - even if, as an aside, the condom rolled up but still covered the head entirely at one point. Nothing on either time ripped.  

3)When performing cunnilingus I did *insert* my tongue at one point - does this change anything? I also fingered her and licked my fingers right after.

 The wait for a 6 week test can be agonising. I can almost predict getting some sort of cold and interpreting this as seroconversion.

4)Finally could I sleep with my regular partner or should I wait and use protection until the time for a test? 

Thank you once again.

3) Also no change in my opinion or advice. Most cunnilngus episodes probably include tongue insertion.

4) I cannot tell you the risk was zero and that you could not put your partner at risk of HIV. However, the chance of it is less than the risk you'll be struck by lightning. If somehow I were in your situation, I would continue unprotected sex with my wife without worry and I would not get tested. But if a negative test result at 6 weeks will further help your anxiety, you're free to do it. (Also, all non-monogamous sexually active people should be tested for HIV from time to time, regardless of actual risk level. So if you haven't been tested in the last year or so, you might do it now. But not because of the exposure you have described.)

Your advice has been of huge help and I am very much glad I sought help via this forum . As my final question, over thinking it again, if I sucked on my finger after fingering her- would this change anything? It's possible I did and likely but I can not be 100% as I was drunk to make matters worse. I realise this is my last follow up so thanks again  

Thanks for the thanks. I'm glad to have been of help. Bottom line:  All is well, no appreciable risk, nothing to worry about!