To all thoses who got a BFP..How does the BFP line shows up?

For me the positive line showed up straight away. With most tests you can see the moisture move up the stick and as soon as it hit that section the line appeared. I didnt have to wait. I had tested negative on previous tests and knew straight away with the positive. If your period isnt due yet, dont lose hope!! You may be testing too early. Good luck :)