I took the morning after pill and it really is delaying my period. i took the pregnancy test and it is negative. does that mean i'm not pregnant?

May re do the test: If you are more than 4-5 days past the expected date of your period, you may wish to re do the test using first morning urine and following the instructions for the test carefully.

When did you take: home pregnancy test? If negative on day period was due, can consider retesting in a week. Delayed period can be a side effect with emergency contraceptive pills.