According to your description, the above situation belongs to the rib problem. You didn't notice before. If you have the above symptoms, you should consider whether you have been like this since childhood. It is a problem of thoracic development.

Suggestion:

There is no need to be too nervous about the above situation at present. You can choose to take a film to see clearly. If it is normal, there is no need to worry. It is caused by congenital development or calcium deficiency in infancy and does not need treatment at present.

Some medical experts said that different sizes of bust are almost a phenomenon in every woman, accounting for about 80%. However, this is normal, and women who love beauty don't have to worry. This is because the left and right breasts have different responses to estrogen, so it is not surprising that breasts with active gland hyperplasia will be bigger. In addition, right-handed workers have developed pectoralis major muscles, so their right chest looks bigger, while left-handed workers look bigger. In the process of breast-feeding, it is often customary to breast-feed in a certain direction with the child in her arms, which can also cause different chest sizes.

The reasons for this situation are:

1. Congenital factors: In the process of embryonic development, if one breast makes the basal development abnormal, in the later puberty development, both breasts will be obviously asymmetrical, and the stunted one will be obviously smaller than the other. Generally speaking, this situation will not affect marriage and childbearing, but it will lose the unique curvaceous beauty of women.

Second, acquired factors: usually happen to women who have given birth to children. When breastfeeding, mothers are often used to breastfeeding on one side. After weaning, the side with more opportunities is more prone to atrophy and degeneration than the side. This situation is generally not uncomfortable and will not affect life.

Third, sports factors: breast inequality is related to exercise habits, posture and amount of exercise. If someone uses one side of the arm more in sports or labor, the pectoral muscles on this side are developed, which can make the appearance of the breast different.

A person habitually uses one side's strength or one side's strength is greater than the other, which leads to uneven stress, wrong posture and trajectory, and uneven exercise effect, thus making one side's muscle mass greater than the other side, directly leading to one side's chest circumference greater than the other side and chest deformation. Then this argument can show that good exercise habits, correct posture and reasonable exercise can also correct the phenomenon of different chest sizes.