Spotting

Has Anyone been Spotting for 3 days and then got BFP? I was supposed to started my period 2 days ago and I’m just Spotting a brown discharge the first day vas light pink with some Clear and sticky CM and yesterday was brown just when I Wipes nothing else... and my period is always heavy with clots... I haven’t see clots either ... I don’t know what is going on... just waiting to see if the Spotting ends...