Was just wondering if anyone knew how soon a pregnancy test can detect a pregnancy as I've had 3 positive tests and if I am pregnant I either conceived on the 29th September which would make me 8 days pregnant and the test picked it up at 5 days pregnant (I took the test 3 days ago) or I conceived while I was on the implant. My implant was removed on the 26th September 3 days before possible conception.