If your test shows a negative result, no pregnancy hormone (hCG) was detected in your urine. You may not be pregnant or you may have miscalculated your menstrual cycle and the pregnancy hormone level may not yet be high enough to be detected. If you are not sure of the result, you may want to re-test within the first week of a missed cycle. If you still have a negative result and your period has not started, you should consult your doctor as there may be other reasons why you have not menstruated.