First time hatching - opinion needed!

[Jaimie-22]

Hi
I was hoping for an expert opinion please. I am worried my egg has died. I decided to let my broody sit some eggs - my 1st time ever. I bought 6 Pekin bantam eggs from eBay. 10 days in only 1 was developing, two days later it still looked to be going strong then my broody get quite a lot if poo on two eggs including the good one. Today is day 16 and I have just candled the egg again but today it looks different, these are the pics I have just taken do you think it has gone or still ok?
Thank you!

 

[Marthab1953]

At 16 days it should be well developed and you could not see through the egg, day 18 is lockdown so I would say it is a goner

My eggs at 14 days



.

 

[Marthab1953]

These were taken yesterday

 

[Jaimie-22]

Thanks, that what I thought but wasn't 100%. Must have been the poo that did it.