OP, this isn't relevant for right now, but just a little contribution to help cross one thing off your worry list. I'm referring to your completely understandable worry about prospects for children.
I left a coercive relationship in my mid-30s, knowing that I wanted children and knowing this wasn't the right relationship to bring a child into - in fact it was that knowledge that propelled me to leave. Also knew that given the biological clock I could be walking away from my last chance to have a child. It was the predictable nightmare with stalking, threats and police involvement (very much hope this doesn't go the same way for you) and I felt completely lost and like a total failure.
Fast forward 20 years and I have 2 beautiful DC who are my world, by adoption and donor IVF. Maybe I did lose my last chance of biological DC, maybe I never would have had them with any partner due to fertility issues. It was certainly a much more complicated route to get to my family than some people have.
My point? It's ALL your choice. I chose to prioritise creating my family in the best way I could, which was to not be with the wrong partner, to access medical support when I had the right partner (wiping out my savings) and to offer a home to a child who needed one. All my choices. Other people would make different choices in the same circs.
Once you clearly take the reins on your life, and just make the choice that's right for you at each point, it's so much easier to ignore all the what ifs. They never go away, but you don't have to pay them too much attention.
So maybe cross off your future family concerns from your list and know that you can trust yourself to make the best choices later, because you're making the right choice now.