stomach and intestines will probably not be possible. no image reference even exists for what a cross-sectional diagram would look like for a girl who is carrying multiple full term babies and also ate half her own body weight in food. I couldn't even imagine what that would look like
for the womb x-ray, I will need to commission someone who specializes in pregnancy x-ray fetish artwork if I want more detailed art. at my skill level, trying to add more detail will probably backfire and make it look worse. tell you what, I'll commission the artist I have in mind after I get enough money through patreon, which I still have yet to set up
for the mic listening, what I can do is sort the digestion noises into 3 categories, being "hungry", "stuffed", and "super duper stuffed", and the noises will transition from hungry > nothing > stuffed > super duper stuffed