So, this is what I've gleaned from speaking with Arva that I figured would be worth sharing, if even just for future reference.
We already know that, according to Arva, she will only allow conception when both parties are on board for it. In addition, I learned that she's somehow going to be shortening the length of our pregnancies. I'm not naive enough to assume that all of us are human, but since I
mostly am, for reference, my normal biology would dictate 40 weeks. Arva says three months.
Also, I asked her about those of us who wanted to contribute to the effort toward repopulating but weren't really ready to be parents and she said that we can choose to give her the child to raise herself.
So...I just thought I'd share; we have flexible options and I figured some of you might want to know those options whether for now or for later.