My 1st son but second baby was born at 36 weeks and he weighed 2500g, we spent a week in special care and as soon as we got home he put on so much weight in the first 2 weeks he was out of newborn nappies.

Our 2nd son was born at 20 weeks and weighed 196g, its not on the chart but I was told at the time that he was quite small for that gestation.

But I think I just have rather small babies as my first was born at 40wks exactly and weighed 2900g and my 4th was born at 40+6 days and weighed 2842g and 50cms.