No one had me do anything. THAT would be weird. A pap is uncomfortable. A vag ultrasound is nothing. Not uncomfortable and the view will be better than a regular ultrasound.
A duck will usually lay one egg either every day or every other day.
Most ducks do not start laying eggs until they are between 9-11 months old. Depending on the breed they can lay year round. A duck will lay an egg a day until they have a clutch, between 8-15 eggs and then the mother will sit on them.