Yes, you might not need a breast pump. However, if you will separated from your baby more than two hours a day or your baby is very young, nursing often, or your supply is not established, you may need a breastpump. If yes, supplemental food such as cereal, bananas and the like may be able to be used in place of expressed milk for short separations. If no, supplemental foods should not be an option since solids are not recommended by the AAP until at least 6 months of age. Fourth, you probably do not need a breastpump in any of these circumstances if you are proficient at hand expressing.
Hand expressing is a learned art.
Once learned, you may find you can express 3 to 5 ounces in very little time. However, most mothers, whether WOH or SAHM still prefer a breast pump. If that is the decision your have made, let's see if we can determine which one is best for you .