Bon - I agree its hormones, its something in us that at the sight of a newborn we just melt. A bit like when a baby cries your boobs leak (well in the earlier days anyway).

I just keep reminding myself how much I am enjoying NOT being pregnant and being skinny again, and how much I want to start teaching next year before I think about another baby. I am happy to live vicariously through others for now - must listen to my head for another 18months at least!!