Someone something said on this board that really helped me get a grip when I was spinning my wheels: "Just do the next right thing." You don't have to get everything right, this isn't a beauty pageant, sometimes we're going to do and say the wrong thing or do it clumsily, or lose our marbles, and it's easy to come down hard on ourselves and feel like failures if we don't perform perfectly.
Just do the next right thing, whatever that is.
I apologize for peppering you with comments, but this is too familiar to me and I feel you. Have you picked out baby names yet? That was my favorite part when I was anticipating my baby girl. Babies are the best.