When you should start using your breast pump depends on your breastfeeding goals and personal journey. If your plan is to exclusively pump or if your baby is in the NICU and is unable to nurse, pumping very soon after delivery would be ideal. However, if your goal is to exclusively breastfeed and it’s going well for you, then there is no rush to start pumping since feeding your baby is going to be what helps your milk come in and your supply to increase. If you’re having difficulty breastfeeding, you should consult with a lactation expert to decide when is the right time to start using your pump.