Very scared and unsure of what to do

To start off I have a 15 month old son who I love more than anything in the world. His father and I have toxic relationship. I don’t have help from anyone besides my dad has helped me with a house. My sons father does not help with anything. He is an alcoholic who has been “sober” for going on three months with a handful of slip up in this last month. I’m so mad at myself for not leaving sooner. It makes me feel so weak. I would be money so I would go over to where he stays to just have some company. He ended up pressuring me into having sex with him one night and a condom was used. Fast forward 6 weeks and I find out that I am pregnant. I never thought I would have an abortion but I do not want another child with this man. I am not financially stable on my own and I know he will not help me in any kind of way. I am so scared to be a single mom of TWO. please does anyone have some encouraging words?!