I feel so alone..

This isn’t my first pregnancy. But this is the first one that’s actually making progress. Except this time, I wasnt trying to get pregnant. My fiancé and I split after realizing that we no longer shared the same love for each other that we once did. We started falling apart after 3 consecutive miscarriages. And now a month after our breakup I find out I’m pregnant!! I have so many mixed emotions. I haven’t told him yet. Idk if I even want to. The only people who know are my really close friends and my sister. It’s not that I don’t want my baby but I didn’t expect it to happen like this. I feel so alone. My depression and anxiety have only gotten worse for the fear of being a single mother all by myself. Idk if I want to tell my ex yet because he has some issues with making me feel bad for things he does to himself, and he can’t hold a job. I don’t want to bring a baby into that. I just don’t know what to do. Any advice or same situation moms please reach out and tell me how you handled your situation like this! I’m begging for a good story to get myself out of this funk!!!