confused and hurt

so my kids father and I broke up in November he left me for someone else..

needless to say I am pregnant and having our baby 5/1/18 and these past few days he has not contacted me asking how our son is or asking anything about the baby being born.. he just thinks that on the day I have her he can come up to the hospital be in the room and then leave to go back to his girlfriend..well here is my problem. I don't know if I can emotionally take the stress of him coming in acting nice then watching him walk out of our daughters life again but this time when she's here..I feel like I am being rude but at the same time I feel he should be in the room anyway... I'm confused and. idk what to do...