Bladder infections in women often are triggered by sex--not because the bacteria are transmitted sexually, but because during intercourse bacteria around the vaginal opening can be massaged into the woman's urethra. Chlamydia and gonorrhea can cause the same symptoms.
The only STDs that can be acquired orally and then passed genitally are HIV, which you don't have and wouldn't cause your partner's symptoms anyway; and syphilis. Syphilis is epidemic in gay men, so you could have been exposed. But if you acquire syphilis orally, you would know it by the sore (chancre) in or near your mouth; and you would then have to progress to the skin rash of secondary syphilis, which usually is pretty noticeable; and that rash would have to cause an open sore on the penis, which presumably you didn't have. Chlamydia and gonorrhea, the only STDs that might cause your girlfriend's symptoms, cannot be acquired orally and transmitted genitally.
HHH, MD
Is it possible to get syphilis on your penis if someone performed oral sex on you? And if so, what's the maximum amount of time it takes for the chancre to appear on the penis? Is it sensible for a syphilis chancre to appear 4 months after the transmission? The worrisome sore in question is a small round spot on a penis, with a white inside that then turned into a small red bump.
J
Just wanted to tell you that I'm rooting for you. I hope everything turns out okay and your relationship weathers the storm.
J
HHH, MD