Hi our dd is 3 and 3 months and majorly has issues with having a poo. She has always had issues but recently it's got lots and lots worse. We've been potty training and it's been going really well with wees. She was doing a poo first thing in her nappy so that was fine too. It's now been about 3 days and she hasn't had a poo. She seemed to be trying to do one on potty to start with but now she is completely withholding it. She crosses her legs and screams at us to leave her alone. She has woken up three times tonight screaming in agony but still won't let it out. She is doing wet farts which we clean but this is also causing her immense pain because it's making her bottom sore. It's horrendous to see her like this. She is under the weather at the moment with conjunctivitis and a cough which is making her tired but she's taking it pretty well. DP and I are so worried we don't know what to do and feel really helpless. We have been giving her lactulose.
Is your child ready for potty training at nursery? Here's the place for all your toilet training questions.
Potty training
I also second the book "Everybody Poos". DD used to withhold and we would stick her on the loo and read it to her. When she did produce, we would decide what sort of animal pop it looked like (e.g. a dino poo, or a lion poo) 
. For DD it worked surprisingly quickly and FWIW we didn't find movicol helped at all, because the problem was psychological not physical. It didn't prevent her withholding at all, she just developed a sphincter of iron 
My DD turned 3 in May and she refuses to poo on the potty, but will happily use it for a wee. I have to put a pull up on her when she needs to go, otherwise she will hold it in until it gives her tummy ache or is constipated!
She gets so embarrassed about number twos! 
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