It can be hard, but for those moments when no one is helping you it's much easier to just be able to lie down with baby while babe nurses.
I had the flu last January (not stomach flu, the headache, fever, shakes, delirious kind) and dh would just bring ds to me when he needed to nurse and take him away again when ds was done. There were times I was so out of it that I couldn't really talk, but it worked out fine as all ds needed was a boob.
Just try to stay hydrated as much as possible and as soon as you feel up to eating, get some food.