Early pregnancy test paper in about 15 days after sex, or menstruation delayed about 3 days time can be detected, if the test results are negative there are two possibilities, one is not pregnant, the other is the body’s pregnancy hormone, that is, the human chorionic gonadotropin has not yet reached a certain level, the pregnancy test paper is not sensitive, so it did not detect, you can be 1 week later to use the pregnancy test paper test again, and then the test is accurate. The results will be accurate. If it is 2 bars to determine is pregnant, if it is 1 bar to determine is not pregnant, you can also go to the hospital blood test hCG to confirm the diagnosis, the results of the blood test than the results of the early pregnancy test paper detection time is relatively early, in about 10 days of sexual intercourse can be checked out whether the pregnancy.