So the last 2 days i started having greenish yellow stool normal but today i had a little yellow diarrhea could it be from the gallstones orgastritis?

Unlikely: This sounds like it could be from something called gastroenteritis. This is a bacterial or viral infection of the intestinal tract can cause diarrhea. Is often associated with vomiting however. Make sure you stay well hydrated, and if you think this is not the case, you'll need to go to an urgent care center or emergency room for intravenous fluids. Hope this helps!