This one did bug me a little bit, in two particular ways.
Firstly, I think that the technobabble got a little dense at times. Don't get me wrong - I think that a little technobabble (or arcanobabble, if you're writing a fantasy story) can add a lot of flavor to a tale - but you've got to keep the volume down. Even the most patient reader only has the patience for so many pages straight of random gobbledy-gook that he or she doesn't really understand.
Second, the narrator annoyed me. Who the hell decides to get pregnant without making this a part of her conversation with her partner? If this hadn't been an all-female universe, this was more or less the equivalent of putting holes in a condom, except that it requires way more planning and forethought, making the main character almost sociopathic in her lack of respect for peoples' boundaries. You just don't do that! If my partner told me that she had decided to become pregnant without making it part of a conversation, that would be an enormous fight. That's an apocalyptic, we'll talk about it but probably when the conversation is over I'll leave you level offense.
The easiest fix would have been to have the other character be male, because then the pregnancy could be accidental-but-wanted, or the author could have worked in that the narrator sort of accidentally-but-on-purpose screwed up whatever they use for birth control in the future.
Which is not to say that I'm complaining about this being an all-female universe. Goodness knows, the science fiction canon includes enough stories that are in de facto all-male universes (ie. all the characters are male, so it may as well be) that we could use a little of the alternative.
But... I don't know. The main emotional story fell flat because it painted the narrator as such an awful person, and the story didn't seem to see that, which I thought was weird. I could see how her conflicted emotions could have led her to make some kind of accidentally on purpose stupid mistake if she had had a male partner, capable of accidentally impregnating her, but... the premeditation involved in becoming pregnant in this world, in her situation, just made her into a terrible person.