I Found This Pill On The Floor. It Does Not

I found this pill on the floor. It does not match what I take, which is oxycodone 30mg and dilaudid 8mg after foot surgery. It has 30 with a line underneath on one side and the other has a M in a square. It is white and round, same size close to the oxycodone 30mg I take, but not the same color. Can you help please?
email is brmbjm@ gmail.com thank you