I ve had urgent, explosive diarrhea only in the evening/nighttime for the past three days. The first night was the worst of it, and it actually felt very raw/burning and smelled very acidic. Following that, last night and tonight it s been less intense, but still accompanied by stomach cramping, heavy feeling in abdomen, general fatigue, and a very frothy, green stool. What can I take to relieve this? Could this be a food allergy?