I have had some great support over the last three years about DD's constipation under a different name. The pediatrician was convinced she wasn't constipated as she could never feel anything in her tummy and she just needed to retrain herself.
Two weeks ago we went to see a constipation nurse, who ordered an xray, and guess what, DD has moderate to severe impaction in her rectum which is not allowing poo through properly.
Thanks for your help support and allowing me to moan on here, she is now on proper medicine regime and hoepfully within time she will get herself sorted.