A light pink color on a pregnancy test has a high probability of implantation, but you can’t be 100% sure. Early pregnancy tests are a convenient and highly accurate way of detecting pregnancy. Under normal circumstances, if the combination of sperm and egg successfully implanted, the test will appear pink, the darker the color, the greater the chances of pregnancy, of course, there will be a certain degree of error, but rely on the early pregnancy test paper to measure the pink can not be 100% sure of the implantation of pregnancy. In the case of pink marks, it is recommended to observe for another week or so, and then take another test or go to the hospital directly for HCG test, in order to understand the situation more accurately. Early pregnancy test paper can be affected by other factors to appear false positive, so it is best to need to go to the hospital for professional examination.