I've been in bed for the last three days with the flu. Managed to potter around a bit today but I've had rotten stomach ache since I got up and keep having to run to the loo. Feel like I have mild period pains, almost. Not preggers and on no meds. I've had a few digestives since about 10am and nothing else.
I often get problems with my digestive system after a viral illness. I try to eat small amounts of bland things, dry toast or crackers etc, and steer clear of dairy and meat. It generally passes after a couple of days.