ds 3.5 has been fully toilet trained since last summer, he did take about 6 months from we started til he eventually got the hang of it but he has been fine ever since. however recently he hasnt been making it to the toilet on time, he had an accident in nursery on wednesday and has even wet the bed the other night. a friend said its probably the cold weather. i dont want to just put it down to this incase theers an underlying cause. i have asked him wht he didnt get to the toilet but he just says 'sorry mummy its an accident'. has anyone else experienced this in winter or is this rubbish?