Pregnant, and alone

What do i do when I’m pregnant and the dad left out of nowhere? I try to talk to him about the baby and he just ignores me. The few times he’s answered the phone, he screams at me saying he isn’t talking about it and hangs up in my face and ignores me. We already have a 13 month old. I’m completely alone, I’m so depressed, I’ve never felt this sad in my entire life. I had quit smoking when i found out i was pregnant but i started back when he left and i feel so guilty but he doesn’t even want me to keep this baby so i feel like i have no other option. Im not capable of doing this myself. I wanted him to be there to support me, and <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> me and help take care of me considering I’m supposed to be on bed rest but i can’t be because i have my 13 month old that he hasn’t even asked about since he left either. I don’t know what to do. I want this baby but not like this.