Chronic breast pain during nursing should be reported to a certified lactation consultant for clinical evaluation. Leaning over the baby can lead to breast and back pain. If the breasts are becoming swollen, physicians recommend breast-feeding to avoid engorgement. Strong milk ejection reflexes. The actual process of expelling milk from the breast is called milk-ejection reflex .
Milk is ejected from the breast into the baby's mouth.
Normally, women feel a mild tingling sensation during milk ejection. However, some women have strong milk ejection reflexes and experience a painful tingling or stinging sensation during breast-feeding. This usually subsides after the first few weeks of nursing. The nipples turn white during and often in between breast-feeding. Many women report burning sensations in the nipples.