I know how you feel LOL
I had two hens atart sitting at around the same time, Akai, one of my insane constantly broody Indian runners started sitting a nest of 5 mallard eggs last month, and about 4, 5 days ago, I guess she got bored, and Stencil her equally insane,Fawn and white sister Stencil took over, theres one egg left, I candled it the other day and it looked completely full, so space inside, it doesn't stink and she has gotten rather protective, even fluffing up, and hissing at ME, wich she'd never done before,
one of my mallards,mouse is on her second brood, she's sitting on 4 of Sage's eggs, and one of her own, the runners had been co-sharing their egg for atleast 3 weeks now, Mouse is the same, about 3 weeks, so the babies should hatched within days of one another, I'm THINKING this week, but I'm getting impatient!
what kinda duck is your momma/the babies?