If your period has been delayed for six days and you have taken a test and are not pregnant, it may be due to the false negative result of the early pregnancy test, or it may be due to the influence of mental and stressful factors that cause delayed periods. 1. Early pregnancy test paper false negative: menstruation delayed for six days may be pregnant, early pregnancy test paper is through the detection of HCG levels in the urine to reflect whether the pregnancy, when the fertilized egg implantation, the blood can begin to secrete HCG, but the urine HCG appears later than the serum, early test early pregnancy test paper may not be able to detect. Therefore, there may be a false-negative result of “tested and not pregnant”. 2. Delayed menstruation: The normal menstrual cycle is 21-35 days, and factors such as excessive stress at school or work, emotional stress, taking birth control pills, stress, and climate change may cause delayed menstruation, which may result in a delayed menstruation of six days, and no pregnancy after taking the test. If your period is delayed for a longer period of time, you need to consult a doctor to identify the cause of the problem and then treat it. If your period has been delayed for six days and you are not pregnant after taking a test, we recommend that you consult a physician at a regular hospital and follow the doctor’s instructions to complete the relevant examinations.