Implantion bleeding

Brook • Mommma of 4boys!!! 6 years old 3 years old, 6m twins :) where's my girl haha.
Hey! Ok so I have had implantation bleeding with both my boys but I can't remember how long after it took for the test to show up positive. My period was due on the 12th I started bleeding in the 6th last 2 days and was brown and light pink ( with the other symptoms) I'm fairly positive it was implantation bleeding. My question is how long should I wait to test after that?