I just did pregnant test and is neg but i think i am pregnant my last period were feb 19. thank you.

Keep waiting: Your hormone levels need to reach a certain point before they are detectable in a urine pregnancy test. If your last period started 2/19, then you might be too early still. If your period doesn't come by 29 or 30 days from your last, redo a pregnancy test.

Wait and try again: If your last period begin feb 19 it's probably too early for a pregnancy test to be accurate. Wait a few days, and take another test if you still think you are pregnant. A blood test can be helpful if the home pregnancy test is qustionable.