I had sex in december and have had pain my left testicle since then. I had urine tests for chlamydia and gonorrhea, I have had a blood test for herpes and syphillis and they all came back negative. I have had no discharge or pain while urinating. I went to a doctor and he prescribed doxycyline. I was on it twice and the pain has gotten better, it used to have a tingle with it and now that is gone, but the pain never completely went a way so he sent me to a urologist. They put me on azithromycin and ciprofloxacin. The pain might be a little better but is still there. They now told me that there isn't any medicine they could give me that would help and that the pain isn't an std anymore but is possibly something inflamed or a hurt nerve and that I should take advil and soak my testicles in warm water to try to help it and that it may never go away. Is this a believeable answer or should I be looking at going to a different doctor? What could it be?