Developed with fertility expert Toni Weschler, author of the best-selling book Take Charge of Your Fertility.

Toni Weschler has been teaching fertility awareness for over 20 years. She is a nationally respected women's health educator and speaker with a master's degree in Public Health, who has lectured about fertility awareness at hospitals, clinics, and universities since 1982. Using the principles of her book, she has helped iVillage create the iVillage Fertility Planner. Now this invaluable tool is conveniently available online to help women understand their reproductive system, track their most fertile days with an ovulation calendar, and increase their chances of getting pregnant.