Blue eggs are usually very hard to candle. My suggestion would be to get the room absolutely dark and get a 100 watt bulb, put it on a lamp with no shade and cover it with a box with a small hole in the bottom and make sure the only light you see is coming through that hole. Put the egg over the hole and see if you can see anything that way. If not you may just have to wait till hatch day to find out if there is anything in there. Sorry I couldn't be more help to ya. Good luck and welcome to BYC!
It is sometimes easier for me to candle from the large end of the egg, through the air sac. that way nothing inside the egg will interfere with the light. I haven't had blue eggs, but I have had brown ones, and this is the only way I could candle some of them.
I also do this with my quail eggs, and though I can't see through all of them, I can see through quite a few. Quail eggs are notorious for being hard to candle!
Ah, welcome to the joys of blue eggs. I can only see into one of my three and that one I see better because it's further along and smaller. The other two are mysteries with hints of success, but that's all. And I had to put on my reading glasses to get even that impression.
I'm going to try the double flashlight thing this weekend...