Is AF just messing with me?? :(

Wendy

I had a + opk on cd 14 (typical) and if I assume I ovulated by the next day, today would be 12dpo. I’ve tested every morning and all BFN. Yesterday 11dpo I had the smallest wipe of light brown cm and now it’s gone. Is AF just going to toy with me for days so I waste all my FRER? 11dpo seems too late for implantation spotting.