You can get those over the counter UTI test strips at Walmart or cvs and test your urine yourself. They are the same thing the doctor uses and tests for WBC in urine. You could get some and see if you have a current UTI and seek treatment based off that information
I had Ngu after the same exposure you had, tested negative for all stds with a urine sample and later a blood sample.(had WBC in urine could not grow anything in culture) My symptoms came about 8 hours after exposure where Ive read cylmidia and Gon are more delayed. I had a drip which was immediately cleared with a shot in the butt and a 1 gram dose of azithromycin. 6 days later drips gone burning persisted and I had a frequency to urine. I then took cipro for 10 days 500 mg, but the UTI moved to my prostate with red blood cells in my urine and symptoms of pain when defacating and cottage cheese like sperm. . I then took leviquin 750 mg for 7 days and it cleared the uti/prostatis. From all the antibiotics I got balantis from yeast. Just now getting over that. These can be a bugger to treat and if you still have symptoms I'd seek another opinion as your doctor seems reluctant to treat. Different antibiotics kill different bacteria. The first day you should have been given a shot and azithro right away. Are your urine samples coming back with white blood cells?