This one is not so much about pregnancy then it is about baby but I read on becoming baby wise with my 1st and it changed my life! It helped me establish a feeding cycle that had my son sleeping almost completely through the night by nine weeks!!! I kid you not! I'm literally reading it again and plan to do the same thing! I was able to exclusively breast feed for a yr and half!!! (I tried stopping at a year but weaning was a 6mth nightmare!) hope this is helpful.
Ina May's guide to childbirth and active birth.
Up the duff by kaz Cooke is good.
What to expect when expecting that was like my bible my first pregnancy