Most people probably experience a bit of pain after finishing a 9-mile run but not the kind that Trish Staine found herself in on Sunday.
The Minnesota woman was training for a half-marathon when she was hit with excruciating back pain.
"I was yelling and screaming -- I thought I was dying," Staine said.
The next day she was holding onto her brand new baby girl.
Instead of a pinched nerve, kidney stones or a burst appendix - Staine was pregnant.
"And I’m, like, looking around, like, no, I don’t believe it," Staine told TODAY on Thursday.
She said that she hadn’t missed any periods, never felt any fetal movements and didn’t have a "baby belly".
Her husband John even had a vasectomy. But when John walked into the hospital, doctors congratulated him on his "brand-new baby girl," he said.
"I definitely thought I was done having kids," Staine joked.
The couple already have a daughter, 7, and a son, 11. She's also stepmother to John's three boys, ages 17, 19 and 20. The pair also have two foster children.
Their new daughter named Mira - short for Miracle - was born at 3:25 p.m. Monday weighing 6 pounds, 6 ounces, and was 18.9 inches long.
They may be shocked but Staine said she and her husband have a good sense of humor about the situation.
"He's still in shock. Everybody is teasing him," she said.