I set my eggs on June 23. Today would be the 12th day. When I candled them what i thought to be the air cell had veins in it. I couldnt see in 90% of my eggs a air cell but could see a few movements in some of the eggs and in others its so dark I couldnt see much. My question is are there supposed to be veins in the air cell or could the air cell be small and I dont see it. Im new to this so I dont know.