I know it's a silly question but my 3 year has a stomach bug. It really hit her hard yesterday and she went to sleep at 5pm and got up at 7.30 this morning. She had a few sips of water and threw it back up. She can't keep anything down. Then an hour later she went back to sleep and is still asleep now an hour and a half later is this normal? She's had stomach bugs before but not this bad and usually lasted a day no more and would be up and playing.