A delayed menstrual period at the age of 41 may be a normal physiological phenomenon, or it may be caused by pregnancy, endocrine disorders, etc. Whether or not to do an endocrine examination depends on the situation. 1. Normal physiological phenomenon: after the age of 40, due to the decline in physical fitness, ovarian function will gradually decline, then menstruation may be delayed until gradually amenorrhea. If menstruation does not come for more than 3 months, you can go for endocrine examination. 2. Pregnancy: If there is a history of sexual intercourse, then it is recommended to consult a doctor in time to check HCG to rule out whether pregnancy is the cause. 3. Endocrine disorders: if a woman suffers from premature ovarian failure, sex hormone abnormalities, then it can also lead to delayed menstruation, this time you can improve the endocrine examination, symptomatic treatment. There are many reasons for delayed menstruation, and it is recommended to consult a doctor for a clear diagnosis and targeted treatment.