I am sad to hear about Eggula I am still rooting for the others please post pictures when they hatch.Graphic!
I candled this evening, no veins candled and no more movement. I decided to open. (Yes the egg looks like it still had veins but chick was gone.) Day 17 most double yolked eggs only go to day 10 so I was hopeful...In the picture below you could see how the egg photo looked like 2 chicks...the yolk that developed is on the chicks belly, undeveloped yolks are liquid around chick.
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This egg was too large for one chick, and there was more than one yolk...
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too much fluid and with the extra yolks did they go bad? Surprisingly there was only one chick and a weird blob to the right. I am keeping this chat open for more chat, and I still have eggs hatching on Wed. I am sorry every one who hoped along with me, thank you for your interest.