I received oral from a sex worker 3 weeks ago. I also received oral sex the same week from a man I know.

I have no symptoms, no pain when urinating and no discharge after the encounters. I had unprotected sex with my partner around 17 days after the last encounter and 1.5 days later she got symptoms of discomfort urinating. She has a history of bladder issues and has had UTIs before.

My question is what are the risks of her having gonorrhea or something else

Oral sex is quite low risk for all STDs -- not entirely risk free, but a lot lower than unprotected vaginal or anal sex. At any point in time, the large majority if sexually active persons -- including sex workers and sexually active men who have sex with men (MSM) -- have no oral STIs. And in the 40+ years of the world wide HIV/AIDS epidemic, there have been few if any scientifically confirmed cases of HIV transmitted oral to penis. The only STD likely from oral sex that also could cause UTI-like symptoms in your partner is gonorrhea. But if you have not had obvious gonorrhea symptoms (pus from your penis, painful urination) it is very unlikely you have it. Contrary to lots of misinformation online, chlamydia almost never is a risk from oral sex. 

As suggested above, gonorrhea can cause UTI-like symptoms in women, but still almost all women with such symptoms have UTI. And sex itself can trigger UTIs in women. Give your partner's UTI history and your low risk, it is far more likely she has another UTI than gonorrhea or other STD.

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD

So if I understand correctly if I was infected with say gonorrhea I would more likely than not show some symptoms and the chances of having it and not showing any symptoms is very low but not impossible