I imagine this is the worst bit now, Jones.
You're three and a half weeks into this (but I bet it's feeling like a lifetime already.)
I imagine it's much harder now than when you initially found out.
It must seem like a mountain to climb, but you can achieve whatever it is that is best for you.
I posted in the early days of your thread about how good friends of mine got through it and came out much better at the end of it all.
They had time apart, and both went through a range of different emotions and intentions...they were staying together, then he wanted to move out, then he wanted to get back together and she didn't...then he moved back...eventually they worked out that they both wanted to be together, but it took a good 12-18 months for them to both want the same thing at the same time, and even then there were still all the underlying problems that the affair created, that still needed working through.
I've read your DH wants to make it work.
Whilst this is good, I imagine it puts a fair bit of pressure on you. Through not fault of your own, it must feel like the whole of your family's future lies in the palm of your hand, and the weight of all of that on your shoulders must be a huge emotional burden.
Don't try and fight your emotions, work through them.
Sorry for the awful cliche!
xx