Brief Answer:
Possible resistance from one of the antibiotics you have been treated.

Detailed Answer:
Hello,

Thank you for using Healthcaremagic to post your health query.
I read carefully your question and I understand your concern.

Your doctor has treated you empirically, for the most common sexually transmitted infection. This is a practice used commonly because it saves some money to do the tests, in general if one has one infection they have the others too, and also the treatment is started as soon as possible and it is not needed to wait for the tests results.
Apparently though, you are resistant from one or more of those antibiotics you took.

So, what I would recommend now is to go to the same doctor (because he knows what he has given you) and he can give you the next option of treatment, that is used in case a person is resistant from them.

Or, you can be tested for these sexually transmitted infections and get treated for the one that it is still in your body.
These are Chalmydia, Gonorrhea, and Trichomonas. If you doctor has given you Azythromycin, it is one of those that recently has shown to be quite resistant.

Hope this is helpful.
Let me know if you need more clarifications.

Regards,
Dr. Papaqako

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