If you took a test before your expected period and you still think you are pregnant, we recommend waiting 48 hours and repeating the test with a fresh strip and a fresh urine sample. If you are in fact pregnant, waiting 48 hours allows the level of HCG to increase, which should produce a positive test by the date of your expected period. If the test is negative and you are past the date of your expected period, it is possible that:

1. the concentration of HCG in your urine is not high enough yet to be detected
2. you miscalculated the date of your expected period and are therefore testing too early in your menstrual cycle
   
3. you are not pregnant
   

If you are more than two days late getting your period, repeat the test with a fresh strip and a fresh urine sample. If possible, try to limit your intake of fluids two hours before taking the test and collect the sample using your first urine of the day. If the test is negative again, but you still think you’re pregnant and you have not yet had your period, see your doctor.