I agree with G and NM.. be angry and I'd do some major NC if I were you. Your WH is so wanting everything right now (to be a father, to have his career, to have you as his friend) - well, NO NO NO. You have the power in your hands, Babydoll. You are carrying his child, you will be it's Mother - the prime caregiver. Let him know you don't take his actions (leaving you pregnant) lightly. What he did is NOT okay (I am surprised that all our WHs seem to think it is, or that it is 'for the best'...amazes me still). I don't mean become wicked towards him, but do what NM is right about how selfish he is and how he knows you want him back but 'doesn't feel' like being married right now. Stop being his friend.
Curious also to know what boundaries you set, if any?
Are you prepapred to do as G says and go NC?
For what it is worth BD, and I know no sitch is the same, but being "nice" and trying to provide opportunities for my WH to connect with the pregnancy and birth in the lead-up DID NOTHING positive for me or my DBing. Actually, it made things worse.
These WH's cannot 'turn around' before the birth. Best show them a bit of guts and go NC on them.