When does a positive pregnancy test show up?

Chloe

Hello ladies!

Today marks 11 days late to my period. My husband and I are currently trying for a baby so I am not using any birth control, and I have so far taken 4 pregnancy tests, all negative. I am usually on-time with my period, maybe 2 or 3 days late at the most, this is the longest I have not gotten my period before. If I am pregnant, how much longer do you think until I will get a positive pregnancy test?

EDIT: Woke up this morning in a pool of my own blood so I think I have the answer! Thank you ladies for your input!