Tissue passed?

Ok please don't make fun of me. I am very worried about this pregnancy. I've literally been standing on glass.

Anyways I went to the bathroom at a friends house and their toilet is a little dirty. I sat down and peed and then stood up and thought there might haave been a chuck of tissue in the toilet. I haven't been having any bleeding or cramping and I didn't feel anything come out. It was about the size of a quarter. Their toilet was dirty but I didn't see it before but I also wondered if it was left over poop or something in the toilet. I know it's very strange but I'm worried I've lost my baby.

On the other hand I feel like I would have felt it or could it be mucous?