3. What to Expect When You’re Expecting by Heidi Murkoff & Sharon Mazel
It’s a movie, it’s a website and it’s one of the most popular pregnancy books of all time — not to mention being the longest running New York Times bestseller ever as well as being named “One of the Most Influential Books of the Last 25 Years” by USA Today. The best part is that a brand-new completely revised and updated version is due out in May!