I was the first in my peer group to get pregnant. All I craved was reassurance. I needed someone to tell me that all the seemingly random symptoms I had - weird things, such as excess saliva - were normal. And I was worried because I wasn't getting any morning sickness.

Heidi Eisenberg Murkoff is the author of the world's best-selling pregnancy and parenting series What to Expect that began with What to Expect When You're Expecting. In 2005 Heidi Murkoff was inducted into the Books For A Better Life Hall of Fame. In 2009 WTE went mobile with the WTE Pregnancy Tracker (a popular pregnancy app) the WTE Fertility Tracker the WTE Baby Name Finder and the WTE First Year Tracker.

Time magazine named Heidi one of the 100 Most Influential People in the World for 2011. Heidi Eisenberg Murkoff is the author of the world's best-selling pregnancy and parenting series What to Expect that began with What to Expect When You're Expecting. She is also the creator of WhatToExpect.