I’m 28 dying on the edge!

I’m “married “ to a married man. My marriage is not legal since only the first wife counts. Me& her are friends &her kids. She has 8 kids with him and I have been married for 8 months. I just recently discovered that I am 7 Wks pregnant. Idk how to feel. I love kids but I don’t feel ready. I have nothing to my name. My “husband “ says we should keep the baby. He loves all his others but when it comes to me, yes he pays rent& buys food but nothing else. Like I can complain about a toothache until I take myself to the dentist. I recently wanted to study something where I had to pay $200 every 6 wks for 2yrs and he said it’s expensive. He’s kind, he’s rubbing my belly all the time, hugs and touches me all the time and can help with everything in the house but with all the 8 kids he has, he doesn’t think about owning a home or even buying a car. We live minimal. He and his wife are in their 50s. I feel like he can be a good father but my child will grow up poor like I did or I will have to provide the life I want for it but I don’t have it yet too. I take care of my mom from some little money I get but my mom isn’t supportive of the idea of me getting 🫄 because “I’m not ready” but sometimes I feel like she says so because she feel like me having a baby will take away from her. Here I am. 7wks. Caught between keeping the baby or sending it back to God till I am much ready. I hate this position because I know so many women TTC but I didn’t plan this. My birth control failed me.