Baby father in room?

My child's father has not really been there... He has came around for me when he felt like it..went to 1 appointment and never talks about our unborn child, also hasn't spent one penny on her. I didn't have any help from him, because according to him school and working is more important than appointments and helping me out with getting things ready...  He also treats me like shit and rather be with his friends everyday than help me out. Idk what to do as far as last name and as far as him being in delivery room (I think he's gonna be miserable there ): )