Is this a gall-bladder problem, please help!!?

My stomache and abdomen area have been hurting since Wednesday and I thought it was just a stomach bug. I started to have normal diarrhea 2 days ago. It was just, like, normal diarrhea. This morning, it was green. And now, its green and very liquidy, almost foamy. PLEASE HELP! I've never really been sick, and I'm really scared