sad... and overwhelmed

I'm 34 weeks 4 days and I just found out my boyfriend has been cheating I'm a mess and the last few months is seems like he's lost interest in me and baby he's really not helping with getting prepared and some how I feel like it's my fault I was a single mother before him and I'm terrified to do it again alone ! My family just looks down on me and so I really don't have anyone to talk to or lean on for support! I don't feel pretty wanted or loved and am becoming depressed ... I just don't know what to do at this point as I feel as if I keep making poor decisions 😭😞💔