DS is 5 - last weekend came down with what we think was a simple vomiting bug. He was being sick and having diarrhoea approx every hour from midnight until 9am. He then developed a high temp in the afternoon but went to bed and was a bit better the next day. Kept him off school a couple of days to make sure he was better and he seemed fine although his poos have been very pale - like diarrhoea colour but solidly formed (sorry for the TMI). Fine for a few days then Thursday afternoon suddenly starting shivering, vomited once and then has had a 40 degree temperature ever since! Not really sure whether I need to take him to a doctor or not? Calpol not bringing temp down that much, but after nurofen he is playing, drinking, eating, laughing etc. It's been over 48 hours now so I'm not sure what to do. Not experienced a temp like this being so high for so long before and also not sure if it's connected to the first illness or if he has picked up something else on going back to school? WWYD?