The absence of menstruation is not necessarily pregnancy, usually there may be the following situations: 1. If a woman is in the preparation period, or have sex but did not do defensive measures, when the menstruation is delayed is a high possibility of pregnancy. If a woman is pregnant, she will have other symptoms, such as nausea, vomiting, anorexia, fatigue, etc. At this time, she can use early pregnancy test paper to test, and if it shows two red colors, she may be pregnant, or she can go to the hospital to have a blood test for more accurate results. If a woman is under a lot of stress recently, it is easy to cause endocrine disorders and delayed menstruation. In addition, chronic inflammation may also lead to delayed menstruation. It is recommended that if a woman’s period is delayed for more than ten days, she can go to the hospital for a relevant examination to determine the cause and then carry out targeted treatment and regulation.