Decision making

I am married with only one child who is 5 years of age. Recently, I just found out my plan b failed and found out I am expecting again. Me and my husband has not been getting along and was potentially talking about divorce and now this. I am considering abortion but he doesn’t not want that. I’m just thinking how hard this will be for me having two kids. I’m thinking about how am I going to work and what am I going to do. My husband makes decent money I guess but I also have other things I am paying for that I got before him. He mentioned finding a better job if I kept the baby and working things out but I’m scared. And I don’t know what to do. I’m only 23.