There are various theories circulating among the people about the relationship between changes in pregnant women’s breasts and the gender of the fetus, but these claims have no scientific basis. In fact, changes in the breasts of pregnant women are mainly affected by endocrine hormones during pregnancy, not the gender of the fetus. 
Here are some breast changes that pregnant women may experience:
1. Breast enlargement
After pregnancy, changes in hormone levels in the body can cause breast tissue hyperplasia and breast size increase.
2. Darkening of areola
Under the influence of progesterone, the color of the areola may deepen, and the small bumps (Montessori nodules) around the nipple may become more obvious.
3. The veins are more obvious
Due to increased blood circulation, the veins on the surface of the breast may become more visible.
4. Sensitivity or pain
The breasts may become more sensitive than usual and even painful when touched lightly.
5. Lactation
In the third trimester of pregnancy, some pregnant women may find a small amount of breast discharge, which is colostrum. 
Although some mothers may share based on their own experience that breast changes during pregnancy are related to having a boy or girl, this is more of a personal feeling and is not universal. The gender of the fetus is determined by the father\’s sperm and has nothing to do with changes in the mother\’s chest.
If you want to know the gender of the fetus accurately, the most reliable way is to pass medical examinations, such as B-ultrasound examination. The gender of the fetus can usually be determined more accurately in the second trimester. However, in China, non-medical gender identification is not allowed to avoid imbalance in the sex ratio of the population caused by sex-selective abortion.
In short, breast changes during pregnancy are normal physiological phenomena and should not be used to speculate on the gender of the fetus. If you have any questions or discomfort, you should consult your doctor promptly.
Mom shares breast changes during pregnancy, giving birth to a boy or a girl
1. The breasts do not feel any obvious from pregnancy to delivery, do not swell or enlarge. It felt like I had a false pregnancy and gave birth to a son later.
2. I feel that it is not accurate to judge the changes in breasts between men and women, because some people on the Internet say that pregnant boys will not cause breast swelling, and some say that breast swelling will occur. My two children, both boys, had breast swelling when they were pregnant with the baby. Very powerful,When I was pregnant with my second child, I didn’t feel any swelling in my breasts.
3. Breast swelling and pain during pregnancy is a normal physiological phenomenon. Although my breasts also swelled and became larger when I was pregnant with my son, this is just a normal physiological reaction and has little to do with whether the baby is a boy or a girl.
