If you're a father-to-be, don't show up empty handed on Mother's Day -- expecting moms might also be expecting Mother's Day gifts.

A survey from the marketing firm Eric Mower & Associates found that 60 percent of pregnant, first-time moms said they would feel "unappreciated" if they didn't receive a gift on Mother's Day.

However, about 60 percent of dads-to-be said they didn't even realize they should purchase a gift.

More than 400 adults were surveyed.