Give yourself some time to recover from that illness! That's a lot of weight to lose, so I'm guessing that it was no easy thing to pull yourself through. You may have still have some of the effects of the virus in you.

I think the problem is that by the end of the day you are just weak and need to rest. Try eating more, smaller meals during the day instead of fewer, bigger ones. I have this problem too that when I am exhausted, I feel nauseated and just need to go to sleep. It doesn't really have too much to do with food: you body is just shutting down and doesn't want the extra task of digestion on it's plate.

It is important that you take your vitamins every day, plus you might want to up your intake of vitamin C, which will help your immune system to recover. You have to remember that you were VERY sick and it might take just as long as you had it to recover, and probably more. Take it easy on yourself and try to sleep a little more. Your body works on recuperating the most when you are asleep.

I hope you feel better soon.

I also have the same kind of problem. 10 days ago I was told by my doctor that I had gastic flu as I had vomited for 6hrs. That was days ago and I have not had any vomiting since but I am extremly tired, dizzy have blurry vision and no appetite at all. Its getting silly and I just want to feel normall again