Thanks so much guys
! One last thing: I candled my eggs today and did not see any movement until after about five minutes. Should I help them out? Thanks again!!!
Times like this are when it comes down to personal preference. Some people say never to help a chick out, but I myself hate not trying to save every chick. If there is a chance a chick can make it, I help it out. If I were you, I would try to help one of your ducklings hatch. If they were okay, IMO, they should have hatched by now.
Start by chipping into the air cell. If you do that, you'll be able to see if the duckling has internally pipped. If it has, consider leaving it alone. After some rest and more of an air supply, it may be able to hatch on its own. If the duckling hasn't internally pipped, keep going. Try to peel away the shell and shell membrane, being very careful about blood vessels. If it helps, moisten the shell membrane some water.
If the duckling is ready to hatch, there should be very few blood-filled vessels, since most should have dried out/been absorbed. However, there are always a few blood vessels, and if you hit one of them, the duckling will start to bleed. While you're chipping away at the shell/membranes, occasionally put the egg back in the incubator to warm up. Get as much of the shell off the duckling as you can, and then leave it alone. If it is strong enough, it will work its way free shortly.
Good luck!