Delayed menstruation does not come breasts do not bloat, may be related to physiological factors, may also be due to endocrine disorders, polycystic ovary syndrome and other reasons. 1. Physiological factors: a woman’s normal menstrual cycle is usually 28 to 35 days, when more than one week after the normal menstrual cycle is called delayed menstruation, delayed menstruation does not usually occur after the breast swelling. Consider that it may be caused by bad mental mood, excessive psychological pressure, frequent consumption of spicy and stimulating food, or excessive smoking, alcoholism and other reasons. 2. Endocrine disorders: When women have endocrine disorders, it will easily lead to delayed menstruation, breast swelling, and may be accompanied by temper tantrums, poor mental mood and other manifestations. 3. Polycystic Ovary Syndrome (PCOS): This disease is a reproductive endocrine metabolic disease, commonly seen in women of childbearing age, and is typically characterized by ovulation dysfunction, which may cause the patient to delay menstruation, and may be accompanied by scanty menstruation, alopecia, and other symptoms. Delayed menstruation is not breast swelling, may also be related to other factors, if the delayed menstruation for a longer period of time, should be as early as possible to consult a doctor, diagnosis of triggers, to give targeted treatment.