Going to be a single mom and so overwhelmed

Amanda
My boyfriend and I got pregnant in October. He was so excited and confident that we would make it and he was going to be the best dad. 
Then when I was about 8 weeks he came out and told me he had cheated and has been and still is battling a severe addiction I didn't even know about. 
I was so devestated and I was determined to make it work, because my dad wasn't there for me. I was getting so depressed arguing over the phone, as I moved home after hearing all this. I finally said I needed space.
I did not break up with him, I just said don't call me for a little bit and when when you do please be clean and have made an attempt to find better work so we can live together with our baby. 
Well it's been 2 months and he hasn't contacted me. In many ways I feel if he's being like this he doesn't deserve the baby and I but all these experiences and im having a son. I can't help but just feel lonely and depressed and I stay up at night wishing things were different.