Frequent diarrhea, unusual color stools okay?

Frequent diarrhea, unusual color stools okay?

I recently had frequent diarrhea, the stool was at first a thin brownish green color, then a light yellow color like water, and last night, I didn't pass stool anymore but it was a yellowish white mucus, mixed with water. blood, fishy smell, stomach pain, feeling tired and uncomfortable. The doctor asked me if I had frequent diarrhea, abnormal color stools, what's wrong? Thank you.