You didn't really think you were finished did you.
Two years and 2 and a half months after the quintuplets were born the two parents were sitting in a hospital room. Despite being a different hospital they were still asked the same questions as before. And they were also asked the dreaded (but also amazing) question that landed them with ten kids at 22.
"Is there any chance that you could be pregnant?"
"Yes." The mother said.
"Alright." The healer said before performing the familiar spell. "Oh, your pregnant, alright."
Sighing Harry said "How many kids?"
"12."
"I'm sorry what?" Hermione said.
"You are having twelve children."
"Your joking." Harry replied.
"Nope."
"22."
"Do you already have ten kids?" the healer asked the mother.
"Yep."
"Then yes, you will have twenty-two kids."
"Great." The savior of the wizarding world said "Just great."