How long do I wait after taking a pregnancy test?

For my babies no.1 and no.2 I tested positive after missed my period for 1 day. For my no.3, due to no mense I do not know that I am pregnant until I feel hungry all the times. I bought a home test kit and it said I am already 2-3 weeks pregnant. You can use clearblue digital pregnancy test to get results very early and more accurate compared to those strips type where the 2 lines are quite misleading whether you are pregnant or not. You can purchase the clearblue digital pregnancy test from guardian, Unity or Wastons for about $20 per stick.