It has been 5 days since we set eggs in our incubator. Because it said we could check the white eggs after 4 days, we did, but I really am not sure what we are seeing. First of all..what is the dark area at the end of all of the eggs? Is that the yolk and the rest is the air pocket? It looks like that dark area is growing. I am unsure if I see the spidery veins but don't want to give up just yet.. I did a lot of research before we did this but the dark area is REALLY confusing me. I really appreciate any advice.