You poor thing, the flu is just awful. I have only had it twice in my life, and both times I was very sick for around 5 days, then weak and generally lethargic for another 2 weeks, give or take a day or two. I hope you feel better soon. If eating is making you feel ill then stick to liquids for now. I'm sure a friend would pop around with some soup of you told them how ill you are.