No pregnancy in blood test, two bars in test paper may be caused by test paper test error or use of unqualified test paper and so on. Generally speaking, a positive test result of early pregnancy test paper indicates that there is a high chance of pregnancy, but if the blood HCG test is not pregnant, pregnancy can be ruled out, and the accuracy of blood HCG is higher. Blood HCG test is not pregnant, but the test paper is positive is likely to be the use of test paper in the process of the incorrect method, or the use of damp, expired test paper caused by false-positive results, in addition, some women come to menstruation due to changes in hormone levels may also cause false-positive results of the test paper. Two bars on the test paper does not mean that you are pregnant, you need to combine with the blood HCG to confirm the diagnosis, after ruling out pregnancy, you need to closely observe the menstrual cycle.