Breasts do not keep getting bigger after pregnancy. The estrogen and progesterone in the body will rise after pregnancy, and breasts will increase in size and swell under the influence of the two hormones, and the color of nipples and areolas will become darker. As the pregnancy lengthens, the hormone levels in the body also rise and the breasts will change accordingly. After about one month of pregnancy, the rise in hormone levels in the body will gradually slow down and the breasts will not keep increasing in size. After pregnancy, the position of the breasts is relatively fragile, so it is necessary to take good care of the breasts, choose adjustable underwear as the breasts grow, adjust them according to the size of the breasts, and avoid pressure on the position of the breasts. You should also do a good job of cleaning and removing dirt from the nipple surface, and if you have symptoms of swelling and pain, you can choose to use a warm towel to apply a hot compress.