When your period is delayed for a day, a deep and light with early pregnancy test paper may be pregnant, early pregnancy test paper can generally detect pregnancy a week after intercourse, specific should go to the hospital for testing. Early pregnancy test paper is through the measurement of human chorionic gonadotropin in the urine to determine whether the pregnancy, generally women will release human chorionic gonadotropin one week after fertilization, the level of human chorionic gonadotropin will rise, but the rise is not much, it is possible to cause a weakly positive result, that is, a deep and a light situation. Try to take morning urine for more accurate results. If you suspect that you are pregnant, you should go to the hospital in time to have the result clarified by a professional doctor.