It might be something more than just influenza. Actually, there's a good chance it is something more. The flu doesn't just pop up overnight, you would have felt it coming on.
How long before you went to bed did you eat that chicken? If you ate it then immediately went to sleep, it could have settled wrong in your intestines causing a blockage that would explain the diarrhea and nausea much better than the flu would. The reason it's 100% water is because nothing can go through your intestine and when nothing goes through the large intestine for a while, the liver creates a lot (more than its supposed to) of a fluid that is normally supposed to help with digestion called bile (the yellow stuff). You should go see a doctor.