Candling duck eggs. Need some advice!

[PoultryBird12]

I am starting another batch of duck eggs and this is day seven. I know a lot of people say you cant see anything until a week or two weeks, does that mean you can't see ANYTHING or you can see some veins and a little embryo because I candled my eggs today and I did not see ANYTHING. I've never hatched duck eggs before. Just chickens and guinea fowl. Any help would be great!

 

[Amiga]

Have you seen this? It has candling photo's.

https://www.backyardchickens.com/t/491013/goose-incubation-hatching-guide-completed