This exploratory study, using a convenience sample of 102 primiparous women in New Zealand, examined the relationship between pregnancy planning and duration of breastfeeding. These women, who had chosen to exclusively breastfeed their infants, responded to a two-part survey: Part I self administered on the day of discharge from hospital; Part II completed during a telephone interview at 6 weeks postpartum. Results: No relationship was found between planning of pregnancy and duration of exclusive breastfeeding. At 6 weeks postpartum, 66 (65%) were exclusively breastfeeding and 34 (35%) were not. Women who had completed 12th grade were significantly more likely to exclusively breastfeed at 6 weeks postpartum than women who had not completed high school (X2= 5.38, p = 0.02)