The Rosie Effect by Graeme C. Simsion (Don Tillman #2)

Can a man who loves order embrace chaos?
Forty-one-year-old geneticist Don Tillman is living in New York City with his new wife Rosie.
Sure, they're incompatible on paper - yet when did love ever follow the rules?
And after ten months and ten days of marriage, Don has accepted a little chaos into his carefully ordered life.
But when Rosie announces she's pregnant, Don panics.
Suddenly, everything he loves most is in danger of being lost . . .
What did Rosie and Don do next? Find out in The Rosie Result - the hilarious and heart-warming conclusion to the series!