She had no nausea, slept on her stomach and never felt the baby kicking. As for her menstrual cycle, Burger said she still experienced bleeding every month (experts say bleeding on a period-like schedule is highly unusual in pregnancy). While women who are pregnant don't have their periods exactly, it is possible to have bleeding related to hormonal changes of pregnancy, said Sukhan, who did not treat Burger.
Burger only gained about 15 to 20 pounds during the pregnancy. She's 5 feet 9 inches tall and weighed 170 pounds when she gave birth. "I'd go to the pool in a bikini," she said.
She was 36 weeks pregnant when she woke up around 4 a.m. one morning with severe cramping. She could barely walk. She and her husband went to the hospital, where medical staff prepared to give her a CT scan of her appendix. As part of standard procedure, they first tested to see if she was pregnant.
Since that particular hospital doesn't do births, a different hospital sent staff to her to deliver the baby.
"They had to break my water and then she pretty much just fell out," Burger said.
Her daughter McKinlee was born Sept. 22, 2010, sharing the same birthday as Burger's uncle and grandfather McKinley, for whom the baby was named.
And her son started calling his friends' parents to tell them the news.
"He was calling everyone and telling them 'My mom's having a baby!'" she said. "And they're like 'No, quit playing jokes!'"
Before this spring, Prentice and her husband had no children, and had been trying to have a baby for four years, without success.
She had always had irregular periods and thought she wasn't getting one because of stress. Her mother passed away in August of 2011, and she helped her father take care of paperwork.
The weight she gained, about 10 pounds, she attributed to drinking too much soda. She got sick once, but thought it was because of the barbecue she ate. As for the baby moving inside her, she probably thought it was gas.
One morning in April her husband came back from hunting to find Prentice in bed, unable to answer questions. There was blood on the floor from where she had bit her tongue during a seizure.
Her husband took her to a hospital in their hometown of Lawrenceburg, Tenn., but doctors there decided to send her to the larger medical center at Vanderbilt in Nashville. A helicopter took Prentice there. She doesn't remember any of this.
The staff at Vanderbilt performed a Caesarean section on the still-unconscious woman. She didn't wake up until two days later.
That's when her husband told her their daughter had been born.
"It made me so happy, but I was scared too, because I didn't know how far along I was, I didn't know if she was OK," Prentice said.
Prentice spent five days in the intensive care unit, while her daughter, Aleanna spent five days in the neonatal intensive care unit.
Before this, she was skeptical of women who aren't aware of their pregnancies; now, she watches "I Didn't Know I Was Pregnant" with a new perspective.
"I was one of these that was saying 'They've gotta know; they've gotta know.' Now: 'No, you don't have to know,' Prentice said. "If the good Lord wants it there, then he's going to put it there."