Ive learned hsv is a rare cause of urethritis. even so, what would symptoms be and how long would they last? no sores and have had azith, metrodonizole, and cipro over 3 weeks, with neg. tests for stis. may be starting doxy and scared of this viral?

Herpetic urethritis usually occurs along with external penile blisters and sores; it is almost never a cause of urethritis alone. Typically it is very painful -- excrutiating, even. Even without treatment, it clears up within a couple of weeks. It is not a possible cause in cases like yours. Speak with your doctor about testing for Mycoplasma genitalium.