Hi, if anyone has any advice I'd really appreciate it. Was testing bfn every day right up until af arrived. Had a normal period. Was slow to start, 2 heavy days, light day yesterday, then nearly gone today, cd5. Did an opk today to check for ovulation as I've been ovulating around cd7 and it was very positive, which I thought was a bit strange. Anyway, decided to do a one step pregnancy test and its bfp!! Not as dark as the control line, but clearly positive. Was the bleed implantation? Could I have been pregnant but the tests weren't showing it and now I've lost it? So confused.