It sounds like you’re a great mom — congrats on your baby!

You say he’s making sacrifices — what are they exactly? If you would have separated and he opted out of helping raise your son, he’d still be working long hours to pay support — but he’d have to feed himself and manage his own household. If anything he’s benefiting from you managing 100% of the household and baby duties by staying with you. He doesn’t like diapers or crying? YOUR traumatic birth was difficult for him? It sounds like his problem is that he is incredibly selfish. And that’s okay — that is probably why he didn’t want another child. But you probably have to decide whether or not this person adds value to your life or to your child’s life. Do you want to continue a life together where you’re exhausted managing everything (including his feelings) but he’s still complaining about how hard things are for him? Maybe that’s worth it to you, and that’s okay if you want to move forward knowing you’re carrying the heavier load. But if you want to opt out of doing that work for him, opt out. Your child is not a debt you have to pay this man back for. You don’t owe him anything just because he didn’t want a baby. You decided to have the baby, he decided to stay. That means he puts the work in (including getting active treatment for PPD/PPA if he is experiencing symptoms).