Dd is 20mo and has been poorly for 2 days. She has a bad cold, a slight temperature, has vomited several times, and is very clingy and lethargic. She didn't eat anything yesterday but I got her taking frequent sips of water and she managed some breast feeds in the afternoon. Today she retches when trying to latch on to breast feed, as her nose is blocked, and has now stopped trying, and is refusing and screaming when I offer water or squash. I've tried lots of different cups, straws etc. Since 7pm last night she's had a few sips of squash but was sick a few minutes later so not sure how much stayed down. Am I right to worry or should I trust she'll drink when she's ready?