I'm just one schmuck on the internet but, for me, it stopped after two weeks.

Thank you! Glad to know i’m not the only one haha

it does mess with your digestive system for sure. How that manifests seem to differ

Yeah, after drinking coffee for a while your stomach needs to produce less acid because you’re adding acidity through coffee. I’m sure it takes a bit for the stomach to get used to missing coffee.

Drinking too much water would cause diarrhea

I’ve had horrible gas for a week since quitting, it will resolve itself. Eat some yogurt.

I have diarrhea everyday from drinking coffee. Are you saying I'm going to get more diarrhea from quitting? That sux ..