Although a bit riskier but if your oral health is fine and there is no deepthroat then the risk is very low to none.
Well you probably aren’t going to like this answer!
People lie. You should never take someone at their word for being clean of STDs. If you didn’t see RECENT results, I wouldn’t trust them. I work in the STD clinic for my local health department and deal with people being lied to by partners every day!
It only takes a single exposure to contract an STD. If you are worried, get tested! You will need to request a throat swab for chlamydia and gonorrhea, because a pharyngeal infection isn’t going to show up in a urine test. I recommend you just have a full STD panel completed that will include syphilis and HIV testing, too. Syphilis is on the rise and in some people can cause symptoms in the throat and mouth.