Hi. Thanks for asking in Healthcare Magic. In diarrhea, the food moves quickly through intestines without actual time for bile to break down and may cause green stools. But frequent stools with severe cramps indicate infective diarrhea. It could be either amoebic or bacillary in nature and stool test will be confirmatory. Rice water stools signify cholera infection where hanging drop test is confirmatory. Since it is not getting controlled for the standard diet, you will need drugs. Drugs like combination of Ofloxacin and Ornidazole twice a day for 5 days will help. This will control both amoebic and bacterial infection. You are taking proper diet. Rice gruel is better than plain boiled rice. If it becomes more severe even after taking the drugs, then you should consult your treating Dr. I hope this is useful.