I just finished reading
Expecting Better: Why the Conventional Pregnancy Wisdom Is Wrong and What you Really Need to Know" by Emily Oster, and I really recommend it. She's not a doctor, but an economist, so she looks at the medical studies regarding things like alcohol in pregnancy, caffeine consumption, epidurals, genetic testing, homebirths, pitocin after birth, etc and critiques them and comes up with conclusions/recommendations based on the data. I found it really interesting. I don't agree with all of her personal conclusions/choices, but it did make me relax about the times that I go over the 200 mg of caffeine threshold and it made me more conscious of things that I had blown off as recommendations (like not gardening).
The book got a lot publicity because of her conclusion that drinking one glass of wine/beer slowly with a meal each day is fine, but there's a lot more to the book than that.
Re: Expecting Better by Emily Oster