If you are preparing for pregnancy, you can’t completely exclude the possibility of pregnancy, the earliest seven days after intercourse, the latest three weeks to check for pregnancy, if there is no requirement to prepare for pregnancy, two days short of menstruation is a normal phenomenon, relax, and observe the situation of menstruation, menstruation delayed for no more than one week is normal, menstruation is affected by many factors, such as fatigue, nervousness, environmental changes, endocrine disorders and so on. If your menstruation is delayed for more than one week or more than two to three consecutive cycles, you need to check the cause of your menstrual irregularities and take medication to regulate your menstrual cycle. In daily life, try to maintain a regular routine, do not stay up late for a long period of time, have a regular routine, pay attention to balanced diet and nutrition, exercise appropriately, maintain a suitable body mass index, and keep a good mood, etc., which will help to maintain normal menstruation.