Im pregnant how do i get him to talk to me?

I recently found out that Im pregnant by a guy who is drug addict when i told him he said he had nothing to say to me and he basically didnt know what to say and at first treated me like **** i called him three days ago and talked to him asking him what i should do he again said he didnt know and would call me back so we could talk. he hasnt called me. I dont know what to do i want to call him and have him pick me and talk to me like he said he would but i dont know what to say? How could i get him to talk to me about this?