I feel like I'm on here constantly asking questions about my poor DD 
She's almost 2 and was sent home from nursery on Wednesday as she threw up. She's been sick three times since, and is having absolutely awful watery yellow diarrhoea (that happened initially during the night, so we didn't know, and has therefore given her horrendous nappy rash). The worst case of nappy rash I've ever seen - her skin is so red and scalded, and she shrieks in pain when we change her. It's awful.
So this is day 3 of her being ill. She's drinking some milk, but only picks at meals, no matter what we offer her. There's absolutely nothing we can do beyond keeping her hydrated, is there? We just have to wait for whatever it is to run its course?
Also I'm thinking I change her nappy a couple of times during the night, in case she has more diarrhoea which makes the nappy rash worse . . .