What causes breast pain during the second trimester of pregnancy?

1. Hormonal changes: During pregnancy, hormone levels in a woman's body undergo significant changes. Increased estrogen and progesterone lead to breast tissue proliferation and ductal expansion, which can cause breast pain. 2. Breast preparation for lactation: In the second trimester, the breasts begin preparing for breastfeeding. The mammary glands become more developed and the breasts more sensitive, which may also contribute to breast discomfort. 3. Inadequate breast support: As pregnancy progresses, breast weight increases. If expectant mothers do not wear properly fitted bras that provide sufficient support, the breasts may experience pain due to sagging and stretching.