I nursed my daughter until she turned 2 yrs old and right after she turned 1 we both came down with a stomach virus. My milk supply deminished significantly as well. One thing that you need to make sure that you are doing is getting enough liquids (water). It is very easy to get dehydrated when you have a stomach virus. In addition, for a week or so I had to increase the amount of times that I pumped and nursed until my body caught back up to the supply that was necessary. In the end, it all worked out. I pray that the same happens for you!!!!!Water, Water, Water, nurse, pump, nurse, hopefully this equation will = success.
Be BLESSED...