Question about implantation bleeding

Amy • Trying to conceive for 8+ years after mirena removal. Last early mc was April 2017, and then we experienced a complete molar pregnancy in Aug 2017-Jan 2018 where I underwent extensive hospitalization and chemo therapy to treat!
Ok, so yesterday I woke up to what I thought was af full on, 5/6 days early....today I barely have any bleeding, and have worn the same pad all day long. I ovulated about 12-13 days ago as of yesterday, could this be implantation or just af early?