Spotting or implantation? TMI

Have had CM mixed in with rust color blood. Very little, and stopped after a couple hours.

The next day I got the same thing, a little heavier but not by much. It has also stopped after a couple hours.

The amount is low, only seen because of the tampon. Was checking cm and that’s how I discovered it first day was hardy adding any color to the edge of the tampon, second day when it started again it was a little darker rust color and was on the edge of the tampon.