I had a high fever and a sore throat, so I went to an internal medicine clinic and was diagnosed with tonsillitis.

There’s a possibility of chlamydia or gonorrhea in the throat, so I recommend telling an ENT doctor that you might have an STI and getting tested.

I get tested for STIs even when I don’t think I’ve contracted one. So if it were me, I’d get STI testing in addition to seeing an internist. You can ask for the tests at an internal medicine clinic, too. When I went to the hospital with a fever because I suspected COVID, I mentioned that I had a possible exposure, and they tested me for syphilis, hepatitis, and other infections at the same time. That said, for things like chlamydia, it might be better to go to a specialized clinic.