<s>[INST] hi, I had vasectomy 6 weeks ago. I have pain in scrotum since then and recently i have started getting burning sensation while passing urine. Could you please help to understand if both the issues are related and how can they be treated. I had blood in my urine last week and then burning sensation started. I did urine sample testing but all came negative. [/INST] Hi, I think you are having some infection. Urine microscopy and culture have to be repeated.  Is there any swelling in scrotum.possibility of infection has to be ruled out. Get a direct check up with a urologist. Hope I have answered your query. Let me know if I can assist you further. </s>