Have Urology Questions? Ask a Urologist Online.
Hello this is Dr. Salama MD,
It sounds like you are suffering from a case of epididymitis.
It is commonly due to urinary tract obstruction and occasionally to STDs.
Since you were negative for G/C I would guess it's the former.
Either way, you need a course of antibiotics to resolve this issue.
Let me know if you have any other questions.
If not, please don't forget to leave a positive rating as that's the only way I get credit for answering your question.