I am a guy and met a guy and did the following sorry for the detail

He inserted a but plug. It was his and I’m sure used at some point before me.  It appeared dry and clean but I’m not sure when the last use was. Is this an sti/hiv concern?

He then gave me a handjob using his saliva. He did take the saliva directly from his mouth on his finger to my urethra. Is this an sti concern. I thought not until I searched it and the internet said gonorha can come from infected saliva could you clarify 

Should I wait to have intercourse with my normal partner till I get tested or am I over thinking this?

Sex toys rarely if ever transmit HIV or other STIs unless shared by two or more people in rapid sequence, i.e. during the same sexual session; anything more than a few minutes is sufficient for infected fluids to dry and for little or no infectious bacteria or viruses to remain. So if he had pulled the plug from his own butt immediately before inserting it into yours, and if he has a rectal STD or HIV, you might have been at risk. But since the plug "appeared dry and clean", there was little or no risk.

And STDs are not transmitted by hand-genital contact, even when genital fluids are used as lubrication -- or so rarely that the risk can be ignored. Saliva is even lower risk. Saliva kills HIV, and any other STI bacteria or viruses in his saliva probably did not enter your urethra in sufficient amounts to transmit infection. 

So your risk of any infection is zero or very close to it. If somehow I were in your situation, I would not feel a need to be tested and would continue unprotected sex with my wife without worry that I could infect her with anything. However, you want to remove even the slightest trace of doubt, you could have a urine gonorrhea/chlamydia test, at least 3-4 days after the sexual contact. But I truly do not think it is necessary except maybe to assuage your anxiety about it.

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

HHH, MD