Eggs may or may not be coming soon. I generally expect eggs at 4-6 months of age.
Whether or not they have babies is mostly up to you. If you collect the eggs daily, even if fertilized, they won't develop ducklings inside. (They need to be incubated at the right temperature for the right number of days, either by a mama or in an incubator, to end up with ducklings) You can just keep collecting and eating the eggs if you don't want ducklings.
If you DO want ducklings, then we can certainly advise you on that when the time comes.