What Are The Early Signs And Symptoms Of HIV?

Approximately 6 months ago, I had an unprotected Sexual encounter (heterosexual). I know better than this, but such was my mistake. I have had extreme guilt and anxiety about this every since in addition to being someone who often has OCD. Following the exposure I was tested Three times for Gonorrhea & Chlamydia. All tests were negative. I was also tested for HIV at 3, 4 & 5 months also negative. I had two Urinalysis done for other reasons that each said I did not show WBC in my urine. My long winded question is that I have read numerous sites which reference Non-Chlamydia NGU. I don t think that I have had symptoms, but I am still worried. I seem to have excess urine dribble after urinating. Sometimes upto 20 minutes after I can milk a drop of urine out. This is only discovered because I check myself often due to paranoid tendencies. Should I have an additional Swap test done to check for this NGU? Should I be checked for Herpes? I was told that Herpes is not something to check for without symptoms?