We started potty-training during hols in August when he was 2 1/4. After about 3 weeks he got the hang of doing wees in his potty and happily announces when he wants to do one, pulls own pants and trousers down etc. But he's gradually become more and more distressed about doing poos. He started with a bit of fretting, saying "I don't want the potty, I want the potty, I don't want the potty" etc and this has escalated over the weeks to the point now where he is pretty hysterical as soon as he feels any need to poo. He is so upset I can't distract him with any of his favourite activities eg books / songs once he's in this state. It seems as though he holds on to it for as long as he possibly can and then he poos in his pants as he absolutely won't sit on the potty. He knows it's coming because he tells me. We've told him that accidents don't matter, clothes can be washed, everyone does poos etc and everyone at his lovely nursery is being as low key and encouraging as possible. I don't think there's any physical pain because he's not constipated and is more than capable of telling me if his bottom was hurting. Things aren't much better if he does have a nappy (eg on journeys / outings), it doesn't reassure him. Anybody been in this situation? Just want to be able to calm his fears.