Ds1 is nearly 4. On Sunday he didn't want much breakfast and mid-morning he was sick. Sick 3 more times throughout the day and feverish. On Monday he came up with a rash on his chest, back and neck behind his ear, and continued with the fever. Today the rash seems a bit better but he still has a high temp. I've been giving him paracetamol and ibuprofen. He's not eaten a proper meal since Saturday evening. Anyone know what this could be, and if it's worth taking him to the GP?