Implantation or period?

We’ve been TTC for a while now. I don’t really know when I’m ovulating because my period is super irregular. My last period was Sept 24th. But if I had to guess I’d say I’m 7DPO. I had very very light spotting a few days ago, the next day I had nothing, then this morning I had this. And currently I have nothing. It seems to heavy to be IB but maybe?? Just don’t want to get my hopes up.

Update: I’ve been wearing pads for 2 days, yesterday nothing, this morning it is way lighter than pictured below. Can IB be on and off?? Or is my body just being weird?? *second picture is from the morning*