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If you have started weaning from breastfeeding, or have decided not to breastfeed in the first place, it will take your breasts a few days to adjust to this. Normally it takes between 1-5 days for your breasts to adjust to the reduced (or absent) demand for milk, and to begin producing less (or not producing milk altogether). Until then, here are some strategies to try: applying cold compresses to the breasts wearing a loose-fitting bra trying cold cabbage leaves pumping or using your hand to remove a little bit of the excess milk (note that it is important not to remove too much, or this will stimulate your breasts to produce more milk; however, a small amount is okay). These include: Heat or warmth to the breasts, as this encourages milk production. Stimulation or massage to your breasts, as this also encourages milk production. Use ibuprofen (Advil or Motrin) or acetaminophen (Tylenol) as needed to alleviate pain and discomfort in the breasts. These are available over-the-counter at any pharmacy.
Learn about strategies to reduce discomfort in your breasts. Avoid certain things when dealing with breast engorgement. Try medication.