severe constipation then diarrheadiarrhea following colonoscopysevere persistent diarrheasudden severe diarrheasevere diarrhea after antibioticssevere heartburn and diarrheacontinued diarrhea after colonoscopychronic diarrhea after colonoscopysevere chronic diarrheadiarrhea after colonoscopy normalbloody diarrhea after colonoscopysevere nausea and diarrhea