I have just finished incubating some leopard gecko eggs for 10 weeks that looked good until a few days ago. There's nothing in them! Once you set up your eggs to incubate in an appropriate place, there's nothing to do but incubate till they either hatch or stink. That egg looks as if it may not be good, but I had one hatch at day 47, so it's always possible that it's getting ready to hatch. Hang in there.
Aliza