13 weeks, no partner, what do I do?

My fiancée and I found out we were expecting a month and a half ago. He was excited but worried about the news, since he already has two boys from a previous marriage, and money has been tight. We've just told family, since he wanted to wait in case of miscarriage, but since I relocated to help him be with his family and save him money - I lost my job and he has very little extra $ coming in after child support. After all this time and discussion, he has apologized for not being able to get by and has no other plan/will not maturely accept he needs to make plans immediately and instead still gives excuses how he can't get things on track in time. My family moved me back home 2 days ago to get away from an unsupportive partner, and to get the care I need now. Unfortunately, they're not supportive of me having a child with him, though still claim it's my choice (I've always wanted to have this baby - but now I don't know how or how it's life and mine will be without this child's father's support). I know everyone's stories on here are of excitement, and I haven't gotten to feel much positivity and supported or excited yet, but I could definitely use words of advice or encouragement if anyone out there is going through the same experience of limited options...