hi ladies- just a dumb question about the 3 mo growth spurt... DD will be 12 wks tomorrow but i consider her 3 mo bday to be on 8/18 since she was born on 5/18. is this when i should expect the GS? yesterday all she did was nurse, nurse, nurse which is unusual for her & now today she is really fussy- does the GS happen at 12 wks or at the 3 mo mark? can a GS come early? any ideas? thanks.