Though I'm not entirely sure when I conceived, the BT said between 5-9 weeks (2 weeks ago) but had only been off BC for 7 weeks. I had 3 day bleed (1st and 3rd day spotting, 2nd day red blood) 3 weeks after stopping BC which could coincide with 1 week post ovulation, therefore could have been implantation bleed or some sort of break thought bleeding. Does that make sense?