First timer preg book suggestions?

Hey guys! The bun in my oven is my first and I wanted to get a book that explains the pregnancy and such but not sure on which one. I heard the go to was "what to expect when you're expecting" but all the reviews I've read on it say it's awful! I'm scientifically-inclined so anything with extra medical stuff is better for me than the fluff foo-foo crap. Any suggestions? Thanks!