What is that?

"She's pregnant and something came out"
Enter the home to find three crying adult females, not a good sign.
"something came out in the toilet, its still there."
I go and look in the toilet but really can't see anything except a little tail in the bottom. I reach in and pull it back and to my surprise it is connected to a large oblong mass, bigger than my fist, with the consistency of liver/balogna.
At the clinic, the Doctor cuts into it and determines that its a blood clot and all is fine.
A blood clot.....................I had no idea.
Mom carried to term and all is well