It doesn’t matter if menstruation is delayed for less than seven days. If menstruation is delayed for more than seven days, it is best to go to the hospital for a detailed examination. If this time is exceeded, women with normal menstruation will definitely become worried. It can be divided into the following situations: 1. Pregnancy can occur after menstruation is delayed for 7 days. You can use a pregnancy test strip to test your urine. If it is positive, you are likely to be pregnant. If the "early pregnancy test strip" is negative, it is the opposite. But if you are pregnant, you will also have other symptoms such as nausea, breast tenderness, etc. Of course, the last resort is to go to the hospital for a B-ultrasound examination. 2. Delayed menstruation due to certain medications Some medications have side effects that often cause delayed menstruation. For example, long-term use of birth control pills, emergency contraceptive pills, gastric motility drug Modelin, drugs for treating hyperthyroidism, traditional Chinese medicine Tripterygium glycosides, etc. Its characteristic is that the menstrual cycle is often normal before taking these drugs, but it is delayed after taking it. If it is taken for a short time, it often returns to normal after stopping taking it. If it is taken for too long, it often requires drug conditioning. 3． Surgery causes, for example, uterine cavity surgery can cause cervical adhesions and cause menstrual blood stasis, thus delaying menstruation. 4. Delayed menstruation caused by mental factors: If you suddenly experience excessive mental stress, grief, sadness, anger, lovelorn and other abnormal emotions, it will often lead to delayed menstruation. Under such circumstances, breasts are often swollen and painful, upset, and depressed. Such a situation generally does not require treatment, but sometimes menstruation has been delayed, and Chinese medicine can be taken for syndrome differentiation and conditioning. 5. Chronic diseases Chronic diseases lead to delayed menstruation. Some chronic wasting diseases often cause delayed menstruation due to nutritional deficiencies. Common ones include chronic hepatitis, tuberculosis, tumors, hypothyroidism, severe iron deficiency anemia, aplastic anemia, etc., which often cause delayed menstruation. The above-mentioned diseases often have obvious symptoms, and abnormalities can usually be found, making it difficult to misdiagnose. Once the above diseases occur, the primary disease should be treated as soon as possible. Menstruation will resume naturally after the primary disease is cured. 6. Excessive weight loss leads to delayed menstruation. In real life, many women take some weight loss drugs or excessive diet in order to control their weight, resulting in delayed menstruation. In this case, if the time is short, the normal menstrual cycle can be restored naturally, but for longer periods, medication is often required to restore the normal menstrual cycle. 7. The most common clinical endocrine abnormality is polycystic ovary syndrome. If you have obesity, hirsutism, acne, infertility, etc., you should check your endocrine system. Once abnormalities are found, you should treat them as soon as possible; premature ovarian failure can also cause delayed menstruation. Some patients, especially those around 35 years old, experience delayed menstruation, and often experience facial flushing, irritability, palpitation, and insomnia. They should check six endocrine items to see if there are any problems with follicle-stimulating hormone, luteinizing hormone, and estrogen. If it is a problem with ovarian function, the results of these examinations will be reflected. Once an abnormality is discovered, treatment should be carried out as soon as possible. Commonly used traditional Chinese medicines such as Nvnubao Capsules, Liuwei Dihuang Pills, etc. can be used. Western medicine can take estrogen drugs as needed.