Hi welcome to Health care magic forum.
Thanks for calling H,C,M,Forum.
You have stomach pain, here and there, and your stool became green and fuzzy, You didn't use iron containing medicines or foods,or changed the food.
You have described the disease very nice so that we can have a clear idea. Your problem appears to be the infection of
colon, may be
amoebiasis ,
irritable bowel syndrome, etc.
I advise you to consult a doctor for diagnosis and treatment.
I advise you to have a soft food like food with curd, bland foods like bread, etc.
Avoid taking spices, junk foods, oily foods, and non vegetarian foods.
Wishing for a quick and complete recovery.
Best regards.