I have had painless diarrhea with watery stool for almost

Patient: I have had painless diarrhea with watery stool for almost a week. My symptoms seem to alleviate after I take Pepto-Bismol, although it resurfaces after I have not taken it for a day. I remember eating a bowl of fresh cranberries the day before my first bout. Other than that, I have no history of intestinal diseases. What is the recommended course of action for my case? Thank you very much.

Symptoms: Painless diarrhea with watery stool. Symptoms alleviate with Pepto-Bismol but resurfaces after a day.

Doctor: