Help! is my duck dieing?

[wingessence]

hey guys I need some help on 22 of march I found a duck egg laying on the edge of our pond in our backyard. I took the egg inside cause it was laying at a strange location and the parents never showed up. Anyways to get to the point I been having this little egg in a blanket under a special lamp I bought at the pet store however it has been growing I did see the veins and I can see a huge black body in it now but fact it's been so long worries me I haven't heard a pip and the egg is turning light blue at some parts however it doesn't smell or anything, how can I tell I tried putting it on water I don't see any movement. Any other tips?