hi ive got a son who turns 4 on saturday and we started potty training last easter. he started off fine did really well but after he returned to nursery he got so upset if he needed to poo and its got no better as time has passed now hes on movicol to try stop him from holding it in but he still does yet there have been times recently where he has taken himself to the toilet and done his business with no prompting but still also frequently wets himself. feel like ive done something wrong and the frustration is making me feel like a failure. he will quite happily sit in dirty pants/nappy and hates having his bum changed, always has for some reason