After pregnancy, under the effect of estrogen, the breasts will appear to increase in size, and there will be mild swelling and pain, which is a normal physiological phenomenon after pregnancy, there is no need to intervene in the clinic. It is not necessary to intervene clinically. It is recommended to keep a good mood and take good care of your breasts. Under the effect of estrogen, the breast will also appear nipple and areola coloring phenomenon, and the nipple is very sensitive to touch, there is the phenomenon of erection, these are normal phenomena, are due to estrogen thousands of times increase. After pregnancy, there are individual differences in the clinic, the reaction is different, after about ten weeks of pregnancy, this reaction will gradually decrease, and will gradually adapt, after pregnancy must be checked regularly.