Can STD Be Contracted Through Unprotected Sex?
Please see the detailed answer below.
Hello! I have been through your question.
Related your concern I think that there is no risk to get STD from unprotected sex with partners that have not STD (confirmed by the tests).
But this depends all in their honesty and if they don't know for some STI (if they have not been tested) that sometimes have no symptoms like HSV2, HPV and HIV etc.
So, I suggest to see your STD tests results to be more confident to say that you are free of STD.
I hope my answer helps you.