I got tested in early July due to some nagging crawling feeling in my urethra and came back positive for mycoplasma genitalium. I was given a Z-pack (500mg day 1, then 250mg days 2-4). My symptoms remained and I was then given Doxycycline 100 mg twice a day for 10 days. My symptoms went away. 

Welcome to the Forum.  I'll be happy to comment.  Mycoplasma genitalium is a recently recognized pathogen that can cause urethritis in men.  While azithromycin is one of the antibiotics recommended for treatment of Mg, treatment with at least a single 1.0 gram dose is recommended and some specialists would use 2.0 grams, again given as a single dose is the way to go.  Should that not work the next recommended therapy is with moxifloxacin given daily is the next recommended therapy.  No matter what is being done however, my advice is that BEFORE you start Thurber therapy, you should have a repeat test to make sure that the infection is still present.---

Thanks for the reply. I'll make an appointment for another test.   Just a bit confused about the follow-up urine test they did for UTI/white blood cells, was that pointless or did the negative result mean the MG was cleared?  Are women also at risk with this or just men? 

The test for white blood cells was reasonable.  Mg is one of the bacteria which causes nongonococcal urethritis and the absence of white blood cells would suggest that your infection may have resolved.  It sounds like you now need a "tiebreaker" test.  If the repeat Mg test is negative, you can know that your symptoms are not due to infection and move on in terms of STIs.  If it is positive, you need more treatment.  Overall it sounds like your doctors are doing the right thing.  ---