This is not my model to begin with, you can find it here.
https://civitai.com/models/1356412/hyper-pregnancy-belly-illustrious

This model creates pregnant girls with huge hyper pregnancy bellies.

Made to work with Illustrious
Trigger words > hyper-preg, pregnant, huge belly, veiny belly, navel

Veiny Belly and Navel are optional as they can clash with the proper display fully clothed characters.