Those of you that had Implantation bleeding how soon after did you test positive? I thought AF was starting today @ 11dpo but it was just a tiny amount of brown blood and I've had nothing since. I have a burning/aching feeling really low down which could be AF related and I'm just reading too much into it. I only have 1 frer left and don't want to waste it but I know me and won't be able to resist testing tomorrow. Will that be too soon to show positive IF this really was IB??