Implantation or AF? Please help

Emily
I had brown/red stringy discharge on Sunday, yesterday and today I had brown discharge and now I have just gone toilet and there was bright red in the loo. I have no other AF symptoms. Ovulation was 30/11 and AF is due 16/12... Could this be the beginning of AF... But just 8 days past ovulation, is that possible? Really thought this month was our month, feel so deflated now 😔