Big baby?

Aynslie

So my baby is 18 weeks and got weighed about a week and a half ago and was weighing 18lb3oz, he’s a big boy everyone I speak to always says ‘ oh he is big ‘ I’m scared hes too big? I know that sounds silly but my nephew who is 2 and a half is in size 6 nappies and my 4m baby is size 5!!