Candling eggs, help please!

[Jbently28]

When I rotate the eggs slowly the dark patches do move but they don't seem to when I hold the egg still. That second picture is the egg we thought wasn't fertile but the others have definitely progressed but there's still no visible veins, granted the maran and leghorn are very dark shells but the silkie is a light shell so i expected to see some veins by now. I never realised how stressful this was going to be lol

Oh yes definitely stressful lol. I have my bantam Cochin hen sitting right now on my last viable egg. It internally pipped yesterday. I just checked on it and it has externally pipped so now I gonna be on pins and needles all day lol