This bloke is a complete selfish knob. He has a grand sense of himself doesn't he..believes in his own importance and has a whacking great big ego. What a stupid sad fuck!
It's fine and normal for you to be flailing around, wondering what happened, if it's your fault, to feel miserable and to be frightened. But for now, short-term, while you're waiting for your new baby to arrive, you must try as hard as you can to focus on yourself and your little girl. Try to eat properly and get enough rest.
You will come through this - because you have to - and sooner rather than later you will see him for the utter wanker he is. You will realise that you're well shot of the dead-beat.
He's not 'moving on' by the way. He is just acting like the man-child he is - and as someone said earlier, he has his stupid stupid indulgent parents to blame for that.
Do the washing up before the Great Man of the house arrives home and needs his slippers warming? Diddums. Fuck that.
You need to get angry and strong and you will. He's treated you appallingly and is indeed showing contempt for your feelings in giving you details of his new liason. Which won't last.
I trust he is paying you child support? Have you had some good legal advice yet? If not then arrange some pronto: you can insist he only communicates via email while you pick yourself up and prepare to give birth and then simply do not answer the phone to him.
It's up to him to arrange contact with your daughter. Don't run around for him a moment longer.
You will recover from this and you will have two gorgeous children to boot. You're only 30. A slip of a thing, honestly.
I think you could start by emailing him with a divorce petition.