Finally got to see a good paed re constipation, our son has always with held his poos and his usual paed advised not to toilet train him. Well she's now on maternity leave so we got a referral to a different doctor who told us how to retrain his bowels, very simple just getting him used to sitting on the toilet, then making him sit for 5 mins (using a sand timer) after every meal and before bed. Doc said, I must warn you this could take years..... I am so chuffed for our boy cos he got wee-ing on the toilet in 12 hrs and has not had an accident yet (that was on Friday last week) and now he's got used to pushing out poops on the toilet too! I'm just so pleased for him!