He has a respiratory virus I think (my 11 month old is just over it). DS1's fever is spiking, have given calpol and neurofen and he's in bed with me. He's woken twice to say he's Thirsty and gulped down water then gone back to sleep. He's wheezing and breathing fast (was breathing normally today) but what's worrying me is he's kind of tense and 'shaky' like when your blood sugar drops. He won't eat. Do I need to worry? I can't sleep and am lying here watching him.