Overflowing with tips, helpful hints, and humor (a pregnant woman's best friend), this new edition is better than ever. In this fourth edition of What to Expect When You're Expecting, author Heidi Murkoff has rewritten each section and added loads of new material. There's dozens of new questions, a new week-by-week fetal development section, and a new section on carrying multiples. Paperback. Slightly Imperfect.