What happens when menstruation is delayed for a week and the test is not pregnant

1. Endocrine disorders Women's endocrine system is complex and susceptible to a variety of factors, such as recent mental stress, overwork, irregular work and rest, environmental changes, etc., may lead to endocrine disorders, resulting in delayed menstruation. When endocrine disorders occur, hormone levels are out of whack, which can affect the normal functioning of your menstrual cycle. 2. Medication effects Certain medications may affect your menstrual cycle, such as a sudden withdrawal from long-term use of contraceptives, or recent use of certain medications that may affect your menstrual cycle. These medications may interfere with your hormonal balance, which can lead to changes in your menstrual cycle. 3. Gynecological diseases Some gynecological diseases such as polycystic ovarian syndrome, premature ovarian failure, endometriosis, etc., may lead to menstrual disorders. For example, polycystic ovarian syndrome will cause ovulation disorders, causing menstrual thinning or even amenorrhea; premature ovarian failure will reduce estrogen secretion, leading to menstrual delay. 4. Excessive dieting or excessive weight change Excessive dieting may lead to a lack of nutrients in the body, affecting hormone synthesis, and thus affecting menstruation. A significant increase or decrease in weight in a short period of time may also adversely affect the menstrual cycle. If menstruation is delayed for one week and pregnancy is ruled out, it is recommended to seek medical attention in time, carry out relevant examinations, such as ultrasound examination, sex hormone six-item determination, etc., to clarify the specific reasons, and carry out targeted treatment and conditioning under the guidance of doctors. At the same time, we should pay attention to maintaining good living habits, including reasonable diet, regular rest, moderate exercise, reduce stress, etc., which will help maintain the normal regularity of menstruation.