On the second or third day after birth you will experience some degree of engorgement. This is due to a gradual build up of fluid that causes your breasts to swell and become somewhat warmer. This kind of engorgement is physiological and a positive sign as it tells that the milk is “coming in”.
Continue to breastfeed frequently and unrestrictedly. The physiologic engorgement does not mean that you have an oversupply and it is important to have the baby frequently drain the breast to avoid problems with a pathologic engorgement.