My baby is just on 5 weeks. He has been for his measure and weigh today and it seems he has put on 3lb since birth! he was 7lb (3210g) now is 10lb (4628g). He has grown 5cm length since birth too.

Dosent this sound like alot of very fast wieght gain?
I have heard that quick weight gain when very young is not nessacarly a good thing...