WOW..if the eggs are moving I would NOT suggest you throw it out or crack it open to see how far along it was
If you think moving has slowed/stopped you can float test the egg(s) to see if the chick inside is alive. Use a cup of WARM water, let the water come to a complete still, gently set egg in water and let it come to a complete rest then watch for any rocking of the egg. Make sure there's no pips first though. I would give it till day 25. If no PIP and it rocks in the float test, you can gently PIP the blunt end of the egg (air cell) and gently peck away shell until you can see the inner membrane and then with your finger apply a warm drop of water to moisten the membrane. any veins STOP. If you see the beak has PIPs the inner membrane, remove more shell over where the air space is and put back in incubator, make sure humidity is UP, and wait till the veins go away in the membrane (it can take many hours). Any bleeding STOP and try again a few hours later.
To PIP I use a sharp steak knife, and gently (drill) a tiny hole, then use blunt tweezers to chip away the shell over the air cell.
and, be warned that any interferance can have a huge negative impact on the chick.