ok today's day 7! This is my first time candling, and i've looked at all the pics on here of seeing the veins and stuff, but idk if i just don't have a bright enough light or?? but all i can see in some is nothing, then others about half the egg has a big black thing that moves side to side and takes up like half the egg. and a couple have a smaller black dot inside that. I'm trying to get pics posted, but I haven't seen anything like that on the pics for a day 7 egg... any help please?