My 7 year old just got up from watching TV, walked behind the sofa, started weeing on the carpet and then when I said what on earth are you doing seemed to snap out of a trance and burst into tears hysterically apologising and has been crying for half an hour. What's going on? He wasn't angry when it happened. He seems absolutely aghast at himself. He's had no toileting problems since he was about 3. Could he have just been extremely distracted? Has anyone else had anything like this, should I be concerned? TIA