I need some support

Hey so I just wanted to share my story, see if anyone can give advice or anything or I don't know I'm kinda lost.
So I am 19. I have a 1yo daughter who I conceived with my (soon to be ex) husband, who is currently in prison for rape, which is ironically how I got pregnant. Yeah, guess I was the dumb one there.
Anyway, I'm with a guy who treats me and my daughter well and I love a lot. We have been talking about having a child together, so now we're ttc.
My concern is he will stop treating my daughter as his own once we have one together. Any experience or advice??