Delayed menstruation due to chest pain may be caused by pregnancy, menstrual disorders, PMS, etc. Chest pain generally refers to breast swelling. 1. Pregnancy: Hormone levels in the body change after pregnancy, leading to delayed menstruation and breast tenderness. If your period is delayed for more than a week, you can use a pregnancy test to see if you are pregnant. 2. Menstrual disorders: due to mental tension, stress and other factors can lead to endocrine disorders, causing menstrual disorders, resulting in breast tenderness and delayed menstruation. 3. Premenstrual syndrome: Before menstruation, the level of estrogen and progesterone in the body is out of balance, which causes physical symptoms, including breast swelling and pain is a common premenstrual symptom. It is normal for menstruation to be delayed for one week, but if it is more than one week, we suggest that the patient check whether she is pregnant, pay attention to rest and warmth, and relieve psychological pressure.