With the early pregnancy test paper to do the urine test, the appearance of two red bars exactly the same belong to the strong positive, can only be basically confirmed that the number of days of pregnancy is about 35-40 days. After pregnancy hCG in urine will rise, generally more than 30 days pregnant early pregnancy test paper may appear a dark and light, weak positive reaction. With the increase in the number of days of pregnancy, the concentration of HCG in the pregnant woman’s body gradually rises, and the HCG in the urine also rises accordingly. If the urine test with early pregnancy test paper, the appearance of two red bars of the same color, indicating that the concentration of hCG in the urine to a certain extent, so that the test paper appeared strong positive, but at this time can only be roughly deduced that the number of days of pregnancy in the 35-40 days or so. In addition, the number of days of pregnancy is calculated from the first day of the last menstrual period. After the test of early pregnancy test paper is positive, you should go to the hospital to draw blood to test the value of blood hCG or undergo ultrasonography after 1 week, which can not only determine the number of days of pregnancy, but also be able to determine whether the site of pregnancy is normal or not, except for ectopic pregnancy.