Quetion please help

Can you have implantation bleeding the day before your af is due I'm just wondering because I haven't had hardly anything its light pink kinda creamy with alot of ewcm thats not normal for me I always start spotting the day of af then the second day it turns heavy But not this time I started spotting yesterday which AF was due today so I should have started spotting today then tomorrow full flow I have no clue when I ovulated either