Mighty, I know the possibility of the baby looms large. The truth is that there is not getting away from it.
But now is not the time for you to get unhinged. You have survived a great many things. I know you will survive that if it turns out to be his. That is still an uncertainty, though.
I know its hard when you see them acting like their old selves. But he still has a lot to figure out. You want him to do that regardless of what you decide.
So, back on your path, right? One foot in front of the other. keep working on you. Keep the focus on the kids. Leave him to work thought his stuff.
