Grape Looking “Thing” Found Inside Egg

[Curious Unicorn]

Is this an egg in an egg? It was white colored, with a squishy overripe grape texture. I punctured it but I accident but it looks like there might be a hatchling inside of it... What do you guys think?

 

[Sussex19]

This thread is quite old, you might get a better response by starting a new thread here https://www.backyardchickens.com/forums/emergencies-diseases-injuries-and-cures.10/ or here https://www.backyardchickens.com/forums/chicken-behaviors-and-egglaying.18/.
Best of luck, and welcome to BYC!