Clear egg ending up being fertile?

[Iluveggers]

I searched this topic & didn’t see anything. Has anyone had an easy-to-see into egg that was clear on day 7, end up being fertile?

All the advice I see says to leave clear eggs in until day 10-14 if there’s no smell, so I’m wondering how many times they actually end up being fertile after appearing clear.

Sample candling shot from Day 7:

Thanks for taking time to read & respond!

 

[cece_chickens]

It looks like just the yolk and not fertilized. I would just throw it out as it should be showing many veins at this point but it’s up to you

 

[Iluveggers]

3 more:

F & R are more difficult to see into.

 

[Chicken poppy]

It doesnt look good at all to me. I would personally throw.