My son is 3 & 1/2, we tried potty training a year ago, but he wasn't ready. We then waited a few months and then tried again and now he will wee in a potty/toilet at home, at nursery and when out. But he doesn't want to poo in a potty/toilet. He knows when he wants to poo, as he will go and get a nappy and insists it is put on. Things had been "on track" with him pooing in a potty until about a month ago when he had a bad stomach bug and suffered vomiting and diarrhea. I tried refusing his request for a nappy, but he just then appears to "hold it in" until he has a nappy put on at bedtime. All the indications are that he is aware of the signals, but he is then choosing the nappy over the potty/toilet. Has anybody else had a similar experience? What steps did you take?