If women experience breast pain before menstruation, it is likely caused by premenstrual syndrome. Premenstrual syndrome in women is often caused by psychological stress and mental factors. It generally causes symptoms such as headaches, breast pain, limb edema, and abdominal bloating. At this time, it is advisable to give psychological suggestion under the guidance of a doctor. Generally, psychological comfort and guidance should be provided to help women relax. Additionally, a reasonable diet, increased nutrition, appropriate physical exercise, and quitting smoking are all good treatment methods for premenstrual syndrome, as it is caused by psychological and mental stress in women. Therefore, it is possible that a woman might still feel tense after becoming pregnant, which might result in chest pain. The specific situation depends on the individual conditions of the woman, as not all women necessarily experience chest pain. Therefore, it is necessary to analyze each case individually. If further questions arise, please consult a doctor at a hospital.