Did this just fall from my car?

[sg0]

Hi all, I'm just looking for advice.

I just got my left rear tyre replaced and whilst driving back home I hear a piece of metal hit the floor after going over a speed bump. I pull over to investigate the wheel which looks ok, then I take on the road and found this. Don't know what it is or if it came from my car? Should I be worried?

Thanks for reading.

 

[sg0]

Thanks gents. I forgot to mention my car is a Seat ateca. I cant see these on any other wheel tho