Clot or sac??? Did I miscarry

Elizabeth

I have NEVER passed a clot this big before, but I know they can be big.

I looked up a Google search for what a miscarriage sac looked like and some of them look similar. Not sure if anyone can speak to this, or knows what it is.

FYI, this is my first period in a year and has been the HEAVIEST period I've ever had.