Agree with all of this. I was a huge wreck my last night at home. DH was freaked out because he had never seen me that upset. I cried for hours. I cried the first day back at work. I cried the second day. I cried at some point the second week. But you know what, it does get better. Every day gets a little easier. There will always be hard days here and there, but it gets manageable. And if it's really awful, take a personal or a sick day.