How many eggs?
Have you been candling?
How many have shown development?
Before you throw them out, you could take one egg, listen to it closely, candle it, and as a last resort, open it to see what's happening. Based on what you find, you might make a better decision about what to do with the rest.
Not good,last night i floated them and candled only to find 6 eggs had started developing but for some reason had stopped and the embryos were small .Remaining 6 i don,t hold much hope as they are more developed but still don,t fill the egg and its day 24