Implantation Bleeding?

It’s 5 days before my expected period and 9 days after expected ovulation (my ovulation day kept changing while I was tracking all my info during my fertility window).

I’ve got very minimal light cramps, but nothing compared to what I get during my period. I’m moody and I’ve been getting headaches, which I do get right before or during my period, but typically it’s a day to two days before at the very earliest. I also have insanely heavy periods. I typically have very red blood or close to the moment I notice I got my period.

I know the drill. Wait it out and see if it becomes my full blown period and take a test on the day or two after my expected period. I just want to get peoples thoughts...

If this were you, what would you think it is?