This morning I went out to check my duck's egg and it was pure white. When I went out a couple hours after, it had bluish black spots on it. I don't know if it died or the membrane broke. I forgot to mark down what day it was laid so i want to say the egg is around day 24. I don't have any pictures. I candled the egg and one part is totally dark and another part is clear with some veins. Please help.