Is passing a clot 4 days PP normal?

Brionna
Delievered my son vaginally on Wednesday and everything went great! 
 
Just wondering if it's normal to pass a clot 4 days later? It was the width of a quarter and just slightly longer than one. I noticed it happened while I was blowing my nose this morning. My bleeding is very light.
 
Normal or do I call the OB?