She is 3 in March and has been potty trained since she turned 2. She has no accidents and totally gets it but she will not pooh. Insists she won't "let him out" and so withholds for days at a time. She is not constipated (when she does poo it is totally normal and unless she has hung on for more than 3 days not painful to produce) but the withholding is painful for her (and very frustrating for us) and makes her very upset. We have tried everything - from not making a big deal of it to offering rewards (choc buttons if you sit on the loo for a while...) and so on. I think the whole thing started not long after she was potty trained when she was constipated for a few days and did have painful poos. But that was a goo 8 months ago. No idea what to do next... Any ideas anyone? Thanks very much.