Breast swelling and acne aunt delay may be related to pregnancy, endocrine disorders and other factors. 1. pregnancy: if the patient has sex in the near future, there is a possibility of pregnancy, after pregnancy, the body estrogen and progesterone levels rise significantly, will stimulate breast hyperplasia and chest swelling, while high levels of estrogen and progesterone will inhibit the function of the gonadal axis and the menstrual cycle and other manifestations. 2. Endocrine disorders: (1) If the patient has been working under great pressure and staying up late, endocrine disorders may occur, leading to irregular ovulation and the clinical symptoms of chest distension, acne breakouts and delayed menstruation. (2) gynecological endocrine diseases: if the patient has polycystic ovary syndrome and other endocrine diseases, due to high levels of androgens in the body and inhibit the gonadal axis, the patient will have irregular ovulation or sporadic ovulation, resulting in delayed menstruation, acne and other manifestations. For women who have delayed breast swelling and acne, it is recommended that they go to a regular hospital to improve blood HCG, ultrasound, sex hormones and other related tests to clarify the cause of the disease and then actively treat it under the guidance of the doctor.