implantation bleed or af?

need some opinions. I'm not 100% sure when I ovulated. my period is due in about 4 days. today when I woke up I had some pinkish spotting and now it's been 5 hours and tmi but I have filled about a quarter size spot on a pantyliner.. still only pink. think this is probably my period early or IB? let me add I usually have really long periods an ut 10-12 days and I have about a 34 day cycle 😬😬