I have not had any green food or veggie in over 48 hrs and no medicine. Having cramps and diharrea. Diahrrea is very very green. Should I worry?

Diarrhea. You know your diet is what comes out "in the end". Fiber and bulk nutrition have been shown the best for digestive health. Wether you choose to change dietary habits, is up to you, but the proper amount of fibrin in your diet can eliminate many future problems.
Green diarrhea. Indicates mucus mixed with stool. This likely indicates infection. The infection may be viral or bacterial. It seems like a check up is needed. There are now very simple tests for causes of infectious diarrhea. Some causes require specific therapy. Meanwhile, don't let yourself get dehydrated.