I presume that your unprotected oral exposures were receipt of oral sex, not performing it.  I suspect that the MedHelp response that you have found was referring to HIV.  Indeed, There are still no proven cases in which a person has acquired HIV from receipt of oral sex so HIV is not a concern.  As for your penile symptoms, they may reflect one of two STIs potentially acquired from time to time after receipt of oral sex..  While  most commercial sex workers do not have STIs and oral sex only relatively rarely leads to infection, on occasions infections occur.  When they do, the most common problems are either gonorrhea of non-gonococcal urethritis (NGU) caused by mouth organisms introduced in to the urethra during sex (chlamydia is so very rare following oral sex that it is not a practical concern).  This sort of non-chlamydial NGU following is not clearly an STI in the traditional sense, is not readily transmitted to sex partners like other STIs, and in not associated with complications (thus your wife would not be in danger).  In the United Kingdom, many specialists do not treat NGU associated with oral sex.  When treated, oral sex-related NGU typically resolves quickly.   A final possibility is that you were initially or even now detecting the smallish but variable amount of normal urethral secretions that are present (and more so on awakening) and/or that your repeated self-examinations and the trauma associated with them may be causing inflammation which you are now detecting.

You did the right thing to be tested.  It would have helped if the clinic you were seen at also did a gram stain of urethral secretions looking for white blood cells (a urine test, while less sensitive is also sometimes helpful for this).  Your test results should be available in a day or so to guide further decision making.  If you wish to accelerate things, seeking a test for urethral or urine WBCs may provide additional useful information; these tests should be available at a local health department clinic. .  In the meantime, I suggest you do your best to stop the repeated self-examination and squeezing.  

I hope this perspective and information is helpful.  EWH