EMERGENCY HELP WITH GOOSE EGG?

My friend and I discovered an abandoned goose egg approximately 10 days ago. We have it in an incubator at the correct temp/humidity/turning etc. The embryo seems to be rather large and I am almost positive that the egg is much more than 2 weeks old. It is obvious that the embryo has grown and developed in the time period we've had it. Despite the fact that it seems to be growing, we have observed no movement, but heard some possible movement with a stethoscope. HOWEVER there appears to be a liquid which is slightly colored that is being secreted from the end with the air pocket. We candled it and the air pocket is still present and I am worried that the embryo may have died while incubating? There is no rotten egg smell though..