Hi. I tested negative for Chlamydia and Gonorrhea but postive for NGU. I have been on multiple courses of antibiotics, starting with the standard azithromycin single dose, then double dose, doxycyline for 7 days, doxycycline for 7 days plus metronidazole for 5 days, doxycycline for 7 days plus something else for 5 days, and finally erythromycin at 500mg 4 times a day for 21 days. I've just finished the erythromycin and the symptoms (clear discharge and slight burning/tingling) have come back. I will go back to the clinic, but I'm wondering if anyone has any idea how I can cure this. I believe I was initially reinfected by my partner, but we have now abstained since I have had the doxycyline/metronidazole and erythromycin. What can cure this? Thanks.