If your period is normally regular and is delayed this time, it may be due to recent work stress, tension, anxiety or lack of sleep, or changes in the environment or mood swings, all of which may lead to delayed menstruation, as it is affected by emotions and the environment. It is recommended that women must ensure sufficient sleep in daily life, live a regular life, and avoid anxiety, maintain a good mood, and do not smoke and drink excessively, all of which may lead to menstrual disorders. Menstruation is a normal physiological phenomenon for women, but if you do not pay attention to it, it may cause abnormal menstruation. Rest.