Should I be concerned?

I’m about a week away from my period and I’ve been spotting the last two days. It was intermittent yesterday, and very minimal, but continuous today. I never spot. Mid cycle bleeding has occurred for me maybe one or two times in over a decade. I’m a little worried.

I guess it could be implantation. I had unprotected sex twice on 11/23 and again on 11/24. He pulled out but I know the twice in a row on 11/23 was not great thinking. According to the app I ovulated 11/27, with spotting on 12/1 and 12/2.

Is this just a hormonal fluke or do you think I’m pregnant?