I have to congratulate you. You make amazing games and this one is already an absolute gem despite not being finished. What I think would be a great thing to add to the game would be an option to listen to a character's stomach noises (like in one of your other games, forgot the title), and have a character listen to yours, either by putting her ear on the stomach, or maybe there could be a microphone/stethoscope that you could buy? Especially with the stomach noises or gas pills adding to the sounds, that could be awesome.
Also, so far I fail to see what the laxatives are meant for, but if it could make for more elaborate desperation scenes (for example when a character is in public, or using that buttplug you mentioned in another comment) that could be awesome.
Like another user has mentioned, it could be nice if gas and stomach noises pills could stack in effectiveness.
I love your content, keep up the good work. I already love this game to death.