hi, i have just recently started potty training my son of 25 months. Had brilliant first few days with inevitable couple of accidents but on the whole did great by putting him on the potty/toilet every 30mins or so. Made good start again this morning also but this afternoon he refused to wee. After 5 hours he was holding himself, crossing legs and getting REALLY upset but wouldn't let anything out when i put him on the potty, in the end he flat refused to get on it and i eventually coaxed him into some training pants as i was worried he'd do himself damage after such a long time not weeing. he eventually did something but what do i do now? when he's had accdents i have not made a fuss, told him it doesn't matter etc so why would he hold it? HELP!! i don't want to put him off and he was doing so well. the only thing i can think of is that he was pretty tired, (is now having a very late nap) but could that cause this whole episode? its as if something happened to put him off? thought gratefully received!