Breast swelling and pain can occur in early pregnancy. Pregnant women who are newly pregnant may experience breast tingling, swelling and itching, which are normal physiological phenomena in early pregnancy. After conception, the hormone level in women’s body changes, and the secretion of estrogen, progesterone and placental prolactin increases. These hormones stimulate the breasts and lead to the proliferation of breast ducts and alveoli and the deposition of fat in the breasts, which manifests as a gradual increase in breast size. Due to the expansion of breast ducts, pregnant women will feel a sense of swelling and pain. At this time, the color of the areola increases and the sebaceous glands around the areola proliferate, forming scattered nodular elevations, a change also known as Montserrat’s nodules. These changes are related to the level of hormone secretion and there are individual differences. It is recommended to pay attention to body maintenance after pregnancy, pay attention to a light and nutritious diet, and reduce the intake of soy products appropriately. You can relieve the pain and swelling of your breasts by applying hot compresses or massages, and pay attention to gentle techniques.