green mucus diarrhea

Been having the worst diarrhea since yesterday. At first it was more dark brown, then it turned like an orange color and now it's green with some mucus in it. And again today, it's green with mucus in it.

I've been having horrible diarrhea "pains" the entire time.

I've never had this before?? Is this normal??

EDIT - no change in diet. No food poisoning.