I can't reccommend this book any more highly.  I am FTM and my baby was amazing the first two weeks and then two weeks and 1 day hit and he immediately changed into a fussy and colicky baby.  I thought oh he has gas so I tried burping him more, thought he was hungry so I started feeding him more, etc. and nothing seemed to work.  One of my husbands clients gave him this book and I started reading it yesterday morning bc I just didn't know what else to do.  My baby would scream hysterically when hungry but then thrash back and forth when I would feed him and he was getting so frustrated.  This book in 1 day/night help my understand my baby and myself so much better. I'm