Sounds like you caught a cold - perhaps just coincidental, or perhaps from your oral sex partner. Anybody close enough to another person to have oral-genital contact is plenty close to catch a cold, even if there was no kissing. Or you just caught a cold from someone in your environment. In any case, the only STD that you conceivably could catch by performing cunnilingus is herpes, and your symptoms definitely don't suggest that possibility. The antibiotic made no difference because colds are caused by viruses and no virus responds to any antibiotic. There is no STD caught by cunnilingus that responds to azithromycin; gonorrhea and chlamydia are remotely distant possibilities that you can disregard completely. Sounds like you have a wise doctor.
So the answers to your specific questions are:
In the exceedingly remote chance you had gonorrhea or chlamydia, the azithromycin would have cleared it up. You could have given your wife a cold by kissing, but nothing else. I can tell you what isn't causing your symptoms (no STD), but not what the actual cause is. Allergy sounds like a possibility, but your provider is the one to answer that question.
Bottom line: Don't worry about it. Follow-up with your doctor if your symptoms persist, but they have nothing to do with the sexual event you describe.
Good luck-- HHH, MD
hey doc, i got these tiny little raised bumps on the roof of my mouth, and in the back of my throat, with a cold similar to the one the other guy had mentioned.
i went to a doc and she said they looked like little raised vessicles, that my body is fighting something off.
these symptoms dont sound like anything you could get from cunnilingus, right?