The bottom line is that almost certainly you do not have gonorrhea, chlamydia, or any other STD. The risk was not zero, of course, but there are several reasons you can be confident. 

First, chlamydia:  contrary to popular beliefs and lots of online misinformation, oral chlamydia is rare, hence rarely transmitted by oral sex. In fact, there have been almost no proved cases of oral to penile chlamydia transmission. You could have told me you'd had hundreds of such encounters, and I would judge it very unlikely you ever were infected.

Second, gonorrhea:  It's fairly commonly transmitted by oral sex in some settings -- especially men having sex with men (MSM) -- but oral gonorrhea is uncommon in women, even the most sexually active, so most likely none of your partners had it. And if you were exposed and infected, you would have known it. Asymptomatic urethral infection can occur (I'm the researcher who first documented its frequency back in the 1980s), over 99% of infections cause obvious symptoms you couldn't miss, i.e. pus dripping from the penis and seriously painful urination.

Third, you are correct that if you had acquired either of these STDs, you can disregard exposures more than a few months go. The immune system clears both infections from the urethra within a few months. In theory, somewhere along the line you could have had an asymptomatic infection you transmitted to your wife. But if she also has not had any apparent genital symptoms (unexplained vaginal discharge, painful urination other than typical UTI, unexplained pelvic pain), probably she was never infected.

Syphilis always is a consideration for people with multiple sex partners and can be transmitted by oral sex, but in the US the large majority of cases are in MSM; and you certainly would have noticed a chancre (open sore for a couple of weeks) on your penis. As for HIV, there has never been a proved case transmitted oral to penis.

For reassurance, you might want to have a urine gonorrhea/chlamydia test and, to be super safe, blood tests for syphilis and HIV. Honestly, I think even these are optional, but you might sleep better knowing you have tested negative.

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD

again, i know this is repetitive and should be the same answers, but this additional last encounter while four years ago does not change any of the information above.  no medical need for any testing and any C or G if acquired in my mouth would similarly be gone by now and and four years would also be enough time to clear these infections for me and my wife?

again many thanks!