My husband and I both are having stomach cramps and nausea, he ended up vomiting I haven't. no flu or fever. Is a flu coming up?

Nausea cramps. Might be gastroenteritis-viral. Are any contacts ill? cruise? recent restaurants? usually lasts for 24-48 hours. Try to keep hydrated by drinking fluids 2-3 liters -water ,gatorade, pedialyte. if there is > 4 bouts of vomiting or associated diarrhea > 4, fever go to urgent care / ER for IV hydration, medicine to prevent vomiting, and care , may be bacterial and need antibiotics. f/u/ w/doc.