I've had unprotected sex over a month ago. I had for about a month a strong urge to pee all the time, but that has subsided. My pee hole is red and irritated though. Do I have an STD?
2 weeks after I had the encounter I got a pee test for chyl. And possibly gonn. I haven't heard back from them so I assume everything was well.

Maybe, maybe not. You could have a urinary tract or kidney infection, or a kidney stone that's blocking the urethra and causing irritat. Or you could have an STD, could have an enlarged prostate or a variety of other things.

Don't "assume" medical test results. If they haven't called you, you need to call them and ask. If the last doctor you went to had no answers, go to someone else.

Possibly the time to worry about these things is when you decide to whether you are going to have unprotected sex. If all turns out good remember how the thought of possibly having a STD made you feel.