My situation is different from yours in that my WH is at home now and we are trying to R. I can imagine your pain. Im 3 years after the affair and everyday is still a struggle and I have the little triggers you speak of.
I hope that your week gets easier. I can only encourage you to
do more for yourself....surround yourself with friends and family and take one day at a time til you get where you need to be. There is nothing wrong with still having love for your wife. I told my WH that I didnt see a way around loving him, we have kids together and he's always going to be around, and Im always going to have to hear about him through the kids.
Im sorry you are having a hard time right now!