You do sound to have symptoms of a uti. This could happen if you got fecal matter during the encounter in your urethra. I'd go get tested for that as it is treated with antibiotics. You can tell the doctor about the encounter or not as all guys can get a uti. Explain your symptoms. You pee in a cup and they test it. Otherwise, you can get tested for an std on May 8th as planned. Here's a full run down on symptoms for men for a uti. https://www.mayoclinic.org/diseases-conditions/urinary-tract-infection/symptoms-causes/syc-20353447
Was the intercourse unprotected?