Changes in the breasts are one of the most common clinical symptoms in early pregnancy, what are the changes in the breasts in early pregnancy? 1. The breasts begin to gradually increase in size, which is the most common clinical symptom in early pregnancy. The reason for breast enlargement is mainly due to the increase of estrogen and progesterone level in the body, which results in the proliferation and development of breast tissue; 2, the nipple volume increases and the nipple becomes sensitive; 3, the areola will be enlarged and the pigmentation in the nipple and areola area will deepen; 4, there will be Montserrat nodules around the areola, which are caused by the local sebaceous gland blockage and secretion retention resulting in glandular 5, the breast will appear swollen, painful, stinging sensation; 6, some women breast skin subcutaneous veins, there will be dilated performance.