If the pregnancy test is one dark and one light, it means: 1) possible pregnancy; 2) likely ectopic pregnancy; 3) possible weak positive due to diluted urine; 4) possible biochemical pregnancy. Therefore, when the pregnancy test appears to be dark and light, it is recommended to take another test three days later using morning urine. If it is still one deep and one shallow, you need to go to the hospital to have a blood test for blood HCG, and every other day, have another blood test. If the blood HCG value doubles from the original one, it indicates intrauterine pregnancy. If it rises just a little, it is likely to be an ectopic pregnancy. If it does not rise but falls, it is likely to be a biochemical pregnancy.