What Do Healthy Breasts Look Like? | HealthCentral - Sort breasts
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10 Surprising Reasons You Might Have Sore Breasts. Swollen, tender, sore breasts are often the very first sign of pregnancy, Dr. As your estrogen levels increase, they increase the size of your milk ducts, which in turn can increase breast pain and sensitivity, she explains. Breast pain in pregnancy is very common, especially in the first trimester. Well, what's frustrating is that sore boobs can occur for so many.