First of all thank you for your valuable services giving peace of mind and important information to troubles minds.

I would appreciate your input on the below. I know its probably a negligible risk but i would like your professional opinion as well.

I met a girl since one month now (early January 2024) hererosexual no drug use whatsover, local teacher in her mid 30s. Since i am always very precautious we of course used condoms and in addition we had mutual 4th generation HIV test (combo) on the 5th of February (last Monday), which was NEGATIVE. We have been dating since early January 2024. Last night (yesterday) unfortunately the condom broke so there were several minutes of unprotected sex. I am a bit worried of any window period or if she had any sex with someone else in the meantime, even though she assured me she did not have any sex with anyone else within 2024. I have no reason to doubt her. Obviously the chances of that are extremely remote at best. But what is your opinion? Also let me add that she also had condoms herself when we first met, which i realize means that she also takes care. But still i am a bit worried of any window period or if she had sex with someone else within 2024. What are the chances? Should i be worried? Thank you so much!

I agree exactly with your own assessment that you are at "negligible risk" for HIV or any other STD. In fact, going to the root of the word "negligible", indeed you can "neglect" (i.e. disregard) any and all concerns about HIV. You've begun this new relationship with essentially perfect safety in regard to HIV. First, it sounds like your partner is at zero risk for HIV. Second, your negative HIV AgAb (4th generation) blood tests prove neither of you has HIV, and her negative result means you could not have been infected. The only other thought, however, is that you don't mention testing for other STIs. For even further reassurance, you and your partner might discuss also being tested for gonorrhea/chlamydia (urine or swab specimens) and syphilis (blood test). From all you say, you can expect negative results for both of you. And maybe another heart-to-heart discussion about whether either of you has other sex partners currently, or expects to do so. Then perhaps stop using condoms (unless for contraception).

"What are the chances [she has HIV or that you do]?" Zero. "Should I be worried?" Definitely not.

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

HHH, MD