Possible implantation bleeding?

Hey everyone! I'm so confused. So to start off my period has been unusually abnormal the last few months-ovulating really early, then 2 weeks late, then early again- but now, I'm totally confused. I ended AF on the 5th BD on the 10th, and tonight (the 14th) I'm having light pinkish spotting that's a little watery, and had mild cramping last night and today. I wasnt tracking this month because I've been so busy. Is it possible I ovulated already and it's implantation bleeding? I don't know what else it could be, this has never happened!