10 day stomach symptoms with watery diarrhea, cramping, gurgling, nausea- Is this the flu

Patient: I’m on day 10 of the stomach flu. It started with 48+ hours of watery diarrhea, stomach cramps/gurgling and nausea (without vomiting). The cramping/gurgling and nausea continued through the week and the diarrhea has returned. When I lay on my back I can see my stomach churn, rise and fall. I have not had a fever. Is this the flu??

Symptoms: 10 days stomach cramps, gurgling, watery diarrhea