Actually, if your treatment failed, most would then prescribe doxycycline plus metronidazole, precisely becuase erythromycin is similar to azithromycin. EWH.
Thank you very much for your answer, it is very helpful. One thing my second Dr. did say is that if it was ngu and zithromax failed that erythromycin would be the recommended treatment as a next step. I am curious as to why erythromycin would prescribed after zithromax failure, wouldn't erythromycin have similar qualities to zithromax?
Thanks
I agree with your doctor. In general, oral sex is an inefficient way to transmit STDs. Of the bacterial STDs only gonorrhea and nongonococcal urethritis (NGU) are transmitted through oral sex; chlamydia is not and without an obvious sore or lesion on your partner’s mouth, the chances of syphilis and herpes is likewise tiny. If you had gotten gonorrhea or NGU you would have most likely developed symptoms of urethritis (penile infection) and the symptoms you describe while possibly consistent with prostatitis or the recently described chronic pelvic pain syndrome (CPPS- described in Wikipedia) are not suggestive of STD. Even if your partner had an STD (any STD and it is likely she did not), most exposures do not lead to infection.
Finally, had there been an STD present, the medications you have taken would have taken care of it. I would not worry about STD and see no need for further STD concern or testing. EWH