My son for the past few day has been in a terrible mood with me (he's usually very sweet) saying he doesn't like me, shouting at me and generally behaving like a grumpy teenager! he had a bout of tonsilitis a little over two weeks ago and was given penicillin. he recovered quite quickly but then came down with a temperature a week later - not a really high one but he was very quiet and tired at school so they sent him home. I have noticed that his nappies are dry in the mornings and he is reluctant to do a wee when he gets up. when he eventually does its a big one and is dark and a bit smelly. are his bad moods and anger caused by a urinary infection perhaps?