@Metazoxan I think when Zeke says Lorem has rounded up, it only means she rounded up...
In chapter 116, page 11, when Lorem first experiences morning sickness and Zeke connects the dots, judging by how they are dressed it was most likely summer, or at the very least late spring, while in this one chapter they are in the dead of winter, there are at the very least four months in between...
For Lorem to feel the effects of Gospel (supposed) immunity to Zeke's poison so much earlier than she starts having morning sickness is a bit too unlikely...
Rather, after spending so much time together, it is much more likely that Lorem is developing some resistance to the poison, not to the point where she can demonize, but at least to the point where her powers aren't completely useless