About six months ago, I was diagnosed with Gonorrhea after noticing discharge and painful urination. Turns out, my girlfriend had an oral infection, and she transmitted Gonorrhea to me through oral sex. We were both treated. She was given Rocephin and Azithromyocin, and I was given Rocephin and Doxycycline. I wasn't given Rocephin until after my bacterial culture revealed it Gonorrhea and not Chlamydia, but Doxycyline cleared my symptoms within 4 hours. (Obviously) I finished my 10 day course of treatment.
We waited about four weeks after we were treated before resuming sexual activity. We broke up around February and ceased having sex, but a few weeks ago, I noticed a dull ache in my testicles and a near constant urge to urinate. I returned to my doctor, and he repeated my course of Rocephin and Doxycycline. I was never tested for an STI. He just assumed that's what it was. Strangely, I didn't feel that much better after the antibiotics. I still have a dull ache in my left testicle.
I returned to my doctor for a test of cure, and my bacterial culture was negative. Is it possible that this is just inflammation/scar tissue that will take some time to heal on its own? Did I experience treatment failure that can't be detected with a urethral swab?