I was up half the night last night with diarrhea, very loose, and lots of rumbling and gas. After 5 or 6 trips to the bathroom, it was basically just colored water. I can t think of anything I ate that could have caused it. If it was just a virus, I can accept that. But if I need to go to the doctor, I can do so. I took the tiny blue-green pills as directed (two, then one, then another), and I finally got relief. I have diarrhea every few weeks, but this was the worst. Could there be an underlying cause, like gall bladder or something?