After the postponement of menstruation, women use early pregnancy test paper to detect a very light color, which proves to be a red bar deep and a red bar light, a weak positive change, caused by the following reasons: i. It may be that the woman just happened to be pregnant, related to the low level of human chorionic gonadotropin in her body due to the short period of menopause. It is possible that the woman is not pregnant, but there is a certain relationship with the error of the detection reagents or detection methods, urine contamination, etc. If this test result occurs, the woman can change the test paper, test again or retest after 3-5 days, if necessary, you can also go to the hospital to take blood tests to determine the degree of elevated human chorionic gonadotropin level, when the human chorionic gonadotropin level exceeds 25 IU/L, the human chorionic gonadotropin level is more than 25 IU/L. When the chorionic gonadotropin level exceeds 25 IU/L, it indicates that the woman has a higher chance of pregnancy.