DS no poo in over 24 hours

[FabFiona]

Hi all,

DS is 13 months and hasn't done a poo in over 24 hours. Since moving to cows milk at 12 months his poo has become more solid but not like rabbit poo. He is visibly trying to poo, squatting and grunting but nothing is coming out.

He's not grumpy or upset and isn't really in pain when he's trying to poo.

I'm worried about how long is 'normal' before I should take him to the doctor? I'm going to start on the normal 'make the poo move' foods but I'm just worried about infection etc.

Thanks,
Fiona