Is this it?

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We’ve been TTC for about 10 months. I’m 10 days away from AF, and my periods are regular. I’ve had super light spotting, like just tiny little streaks of blood, here and there, on and off all day. I know implantation bleeding doesn’t occur until up to an average of 12 days after conception, so that doesn’t make sense. Is it possible I could have very early bleeding due to conception? Has anyone personally experienced this?