aww, im sorry your feeling unwell=[ listen to your body. if your hungry have a slice of dry toast(since u were sick, small steps) and if you just wanna sleep, do that.
bananas are a good energy boost i find when im feeling low.
Have you been eating enough, the tiredness could be down to a lack of iron, try & eat more green veggies & eat what you fancy & SW style if you're feeling up to it. I'm sure you'll start to feel ok soon.