Look for the control line, which you will use to compare your results to make the test valid. Try to learn using the test kit and reading the results after the recommended time. This includes using your urine sample first thing in the morning, when it is most concentrated. So, if you really want to know if you are pregnant as early as possible, use a brand with high sensitivity levels and follow instructions to ensure the accuracy of results. This is why some brands require you to do the test a day after you missed your period. Therefore, if you take the test too early, when your hormone levels are not yet very high, the test may come back negative. The test kit could probably detect hCG (hormone of pregnancy) only at a certain level and is not sensitive to lower levels. The home pregnancy test you bought has a low level of sensitivity.However, if your home pregnancy test indicates a negative result, a few reasons may explain this occurrence: If you have missed your period and are starting to experience a few symptoms of early pregnancy, you may be starting to suspect that you are pregnant. Late Period Negative Pregnancy Test-Why? Case 1: You Are Pregnant Read on to learn why the test is negative even when you ARE pregnant. Actually, this is a common experience for many women and there are many possible explanations for this. When the test comes out negative, you may be confused as to how this can happen. If you are a woman who has a normal, regular menstrual period and are many days late now (say 4 or 5 days late for period), you would probably get a home pregnancy test and wonder how long delayed period is normal.