Implantation Bleeding.

So my fiancé and I have been TTC for 6 months now. This past week was our week. I was ovulating he was with me every day. Well today I thought AF came to visit but at around 12pm (woke up at 9am) I noticed my bleeding has practically stopped. Now my period has never done this so this is very odd. I am PP for over a year. I guess my question is, could it be AF or is it implantation bleeding?