I am a gay male in my 20s and about a month ago, I had a high-risk encounter with another gay man. We had unprotected anal sex (I was receiving) for 5 minutes (he did not ejaculate), but most of it was protected. I did have a slight cut in the area between my anus and my scrotum.
Approximately two weeks after the incident, my left lymph node has slightly swollen and my left tonsil had slightly swollen as well (it is still swollen and slightly sore to this day). I remember feeling a bit unwell as if a fever was to come, but my body temperature felt completely normal the entire time. The unwell feeling soon passed after a couple days, but my left lymph node remained slightly swollen as well as my left tonsil. I have experienced no other symptoms.
At the same time, I noticed that small pink dots (1 centimeter) had formed across my chest and my thighs, with some on my arm. They are rather mild, but there are a LOT all over my chest (I've never had anything like it before). The dots are NOT bumpy and just seem to be slight pigmentations as the surface skin seems unaffected (the surface is not bumpy, rough, nor rubbery at all). It has been nearly a month and the bumps are still there.
And yes, I will get tested as soon as I get the chance.
Are these symptoms indicative of acute HIV infection, syphilis, or anything else?