When pregnant, due to the development of female glands and the increase of hormone secretion, symptoms such as breast swelling and nipple tingling may occur, but this symptom is not specific, and some women may also experience breast pain during or before their menstrual period, thus it cannot be used as an indicator to determine whether a woman is pregnant. If a woman wants to determine whether she is pregnant, it is recommended to confirm the results by means of early pregnancy test paper or blood HCG test, which are more accurate. Usually, women’s body hormone level changes after pregnancy, placental trophoblast secretion increases, HCG level will increase, usually half a month after intercourse, you can clarify whether you are pregnant by early pregnancy test paper (urine HCG); if the intercourse time is short, you can clarify whether you are pregnant by blood HCG test, usually 7-10 days of pregnancy, HCG > 5.0IU/L, 30 days of pregnancy, HCG > 100IU/L, and the HCG value will gradually increase with the increase of pregnancy week. In addition to breast pain after pregnancy, changes such as breast enlargement, itching in the breast area, nipple protrusion, increased number of small nodules on the areola surface, and increased breast sensitivity may occur. The secretion of melanocorticotropic hormone and adrenocorticotropic hormone in the pituitary gland increases after pregnancy, which may lead to hyperpigmentation of the areola and smooth, wavy stripes on the breast. In addition, some breast diseases may also cause breast pain, such as breast enlargement, mastitis, breast tumor, etc. Therefore, it is recommended that if women experience significant breast pain, they should go to the hospital in a timely manner to get a clear diagnosis and then deal with it accordingly.