If a woman’s period is delayed for 4 days and she gets a one bar result with a pregnancy test, she can either wait or go to the hospital for a blood test. If a woman is not pregnant and her period is delayed for 4 days, it is normal to get a one-bar result on a pregnancy test or a pregnancy test. Usually the period will come after a few days of waiting. If a woman is pregnant, but the pregnancy is still relatively short and the level of human chorionic gonadotropin in the body is still relatively low when her period is delayed for 4 days, a pregnancy test with a pregnancy test stick or a pregnancy test stick will also give a one bar result. Wait a few more days and the result will change from one bar to two. If your period is delayed for 4 days, you can determine whether you are pregnant by taking a blood test for human chorionic gonadotropin (HCG) levels. If the test result is still one bar even though your period has been delayed for a while, you should seek medical advice as your period is usually irregular.