Your exposures was condom protected. You don’t say if they failed so I’m going to assume not. When they do it’s obvious.
You even had confirm protected oral which even without protection is low risk with a condom it has to be zero.
I honestly see no reason to test. Of course you can, if the negative results will help you sleep at night but I wouldn’t, I don’t see a single medical need to,
In regards to your wife, period changes can happen for all kinds of reasons (is she particularly stressed). If this happens again get her to seek medical care just to be on the safe side but it won’t be a STI so need to mention this.
Just so you know, I assume you have googled period irregularities and STI normally when women bleed due to a STI it’s after sex. That’s what it means.