My dd 20 months. Had really bad diarrhoea for over a month, went to docs 3 times and they were useless. Only thing which solved it was rice water (I researched it myself in the end). Anyway, been well for a week or 2 but had severe vomiting today and explosive nappies leaking through her 2.5 tog sleeping bag through to her bed linen! Seemed fine this morning. At the end of the day she was lying down on the kitchen floor - she seemed very weak which is very unlike her. Waiting for em doc to call back but any ideas? She had her second mmr on Thursday. She doesn't have any older siblings or go to nursery but is always putting things in her mouth and eats handfuls of sand from her sandpit, tries to drink bath water etc. Slightly high temp, about 38. Can't help worrying something serious might be wrong, she just seems to be ill too much for my liking ...