My 3 year old hasn't had a drink since yesterday evening at 10.30 and hasn't had a wee either since 8 this morning, when should I ring the doctors for a reassessment? We have already been this morning n seen a really rubbish locum doctor who told us we need to get a urine sample before they can do anything, easier said than done. Offered juice, water even fizzy drinks to get something in her also tried the syringe but failed miserably she also won't have ice lolly or a cup of tea all of which she normally loves