Hello everyone) I have such a question??? My daughter has a green stoo…

Hello everyone) I have such a question??? My daughter has a green stool sometimes with mucus and when it's yellow light. I don't understand why, and is it dangerous... ? Grandma says that from food and that milk is liquid, but he doesn't have much of it. She says this is from medicine (I give baby nos from colic but it seems like it doesn't help).