Spotting, could it be?

Joann
So I'm 12 days away from my AF and I woke up with bright red spotting this morning. It continued till about 9am and now is gone is was very light. I've been testing for ovulation but have been keeping busy everday because the calendar Said I was ovulating so just in case, right!? I'm just really sore and don't know if I hurt myself or possibly implantation bleeding!! I'm just wondering what happened to you guys I have yet to get a positive OPK - 🙏🙏🙏