Yes, if you REALLY don't want a baby there are a lot of other birth control options out there; but breastfeeding can work. I believe it is something like 98 or 99% effective IF you are 6months or less after birth and breastfeeding on demand. (however, this includes no pacifiers or artificial feedings, and often involves lots of nighttime nursing.) Personally, breastfeeding suppressed my ovulation for 15 months after both my children.