Your symptoms, especially since both you and your husband are affected, are likely due to a viral infection. Some viral intestinal infections can last up to 10 days. It is not a good idea to take Imodium for this. It's much better to let the virus run its course. Also, probiotics is OK, but sometimes dairy products are not good when you have this kind of diarrhea.
Try a very bland diet for a few days. Chicken, crackers, rice, bananas, toast, potatoes. Drink plenty of clear fluids to stay hydrated and help your intestinal tract heal. Avoid caffeine, milk products, spicy foods. Low sodium or homemade soup is wonderful.
If your diarrhea and cramping does not clear within another week, or your develop nausea/vomiting, fever, or blood in your stools, you should see your doctor right away for testing to rule out bacterial or parasitic infection.