If your period is usually normal and is delayed for a week or so, you can use morning urine to test for pregnancy, as the value of human chorionic gonadotropin in morning urine is highest during early pregnancy and the test is more accurate at this time. If you put a pregnancy test stick into the urine and it shows two strong positive bars, it means that you are pregnant. If there is only one bar and the other bar does not show, it is negative and there is no pregnancy. If both bars are missing, the pregnancy test is not working and you need to retest with another pregnancy test. If your period is usually irregular and often delayed, you need to take another test, preferably after a week.