Here are a few of my favorite books. They are worth having on hand during your pregnancy and some become great resources for after baby is born.
What to Expect When You're Expecting - this is a pregnancy staple. It is so resourceful and it's great to have on hand when you have those questions that pop in your head in the middle of the night. This is a MUST have you will not be sorry.
Skinny Bitch: Bun in the Oven- This book changed my life forever. Partially because I already knew what was right for me but this book just sealed the deal I became a vegetarian almost 8 years ago while pregnant with my first daughter.
You need a good pregnancy journal I've used this one with my 2nd daughter.
The Baby Manual- this one is good to read before the baby comes but also to have as a reference when baby arrives!
Comment and let me know which one is your favorite!