My just turned 4 year old has been ill since Sunday eve, he seemed a bit off Sunday eve and wouldn't eat much tea, then vomited once Sunday night, also had a fever. He was very lethargic and hardly moved much Monday, fever on and off, had some toast and was sick again on the evening. Today he's been very off colour, just sleeping with a couple of awake periods but very quiet and moaning occasionally like he feels ill. I thought the vomiting was behind us but he had some plain biscuits around 7pm and since then his belly was making a lot of grumbling sounds and he's been passing a lot of smelly wind, then threw up again around 10pm. He doesn't seem to have a fever now but have been giving Paracetamol for pain. He is able to keep fluids down during the day and has been urinating. He just wants to lay down and sleep which is very unlike him. Does this sound like gastroenteritis or could it be something else if still being sick? I've only known it to last a couple of days previously and never seen him so lethargic. Should we be giving him food if he asks or is it not advised if he keeps being sick? Part of me thinks it must be a bug as the gurgling in his stomach sounds like his guts fighting something. Any advice would be appreciated!