Hello there try another test! i'll tell you why i strongly advise you do i had my last period on 16/02/09 on 9/03/09 i did a pregnancy test as i was going out clubbing that weekend and didnt want to drink if i was pregnant it said negative so off i went had a great night on the 16/03/09 my period was due and didnt arrive so i did another test and it was positive! so far my story isnt so strange but i had to have early scans as i have recurant misscarriges so i had a scan when i thought i was 7 weeks pregnant they told me im 8 and 3 days this means that i got pregnant on the 15/02/09 the day before my last period! so when i did the test on the 9/03/09 i had been pregnant 22 days and still got a negative result and finally got a positive at 29 days from conception so keep trying for another 2 weeks then if still negative go see your doctor hope this helps good luck