A Michigan mother found out that she was having twins when doctors spotted a second head during her 47-hour labor.
She and her husband Matthew, 34, has a so-called natural pregnancy, with just one scan during the entire period that was taken on the day of the birth.
About one hour after Blakeley was born, her brother Cade popped out.
The couple is thrilled to have two children instead of one.
"It was crazy. We were over the moon but in utter shock," Ziesemer, who worked in insurance before becoming a stay-at-home mom, told SWNS from her house in Grand Haven.
"There were really no signs that I was carrying more than one baby, in fact, people said how small I was. We thought the biggest surprise was going to be the sex of the baby, little did we know!"
She admitted to having fear when doctors told her another baby was coming and she thought the information could be wrong.
"I just couldn’t take it all in and was still in so much pain that it was almost impossible to process. But I really can’t imagine having just one baby now. It’s like they were meant to be," she said. "I love the thought that they’ll always have each other."
The couple planned a natural home birth with the help of a midwife but went to a hospital when Ziesemer's water broke at 36 weeks. The new mother said that the scan taken after she arrived at the hospital did not show her son and doctors think he was "hiding right behind his sister."
Twin and Other BirthsThe number of twin births in the United States in 2016, the last year full statistics are available for, was 131,723, according to the Centers for Disease Control and Prevention (CDC).
The number of triplet births was 3,755 and the number of quadruplet births was 217.
There were also 31 births of five children or more at once.
The twin birth rate reached 33.4 per 1,000 live births. Twin, triplet, and higher-order multiple birth rates declined but the changes weren't statistically significant. For instance, the twin birth rate in 2015 was 33.5 per 1,000 births.
The birth rate for women in their 20s continued to drop, a trend that started in 2006, and hit a record low for 20- to 24-year-olds, at 71.0 births per 1,000 women. The rate for women aged 30 to 34 had been increasing in recent years but declined two percent from 2016 to 2017, the first decline since 2010.
The birth rate for women aged 35 to 39 also declined by one percent, the first decline since 2010. But the birth rate for women aged 40 to 44 was up to 11.6 births per 1,000 women, a two percent increase since 2016, and continuing a trend since 1985.
Women aged 45 to 49 saw a birth rate of 0.9 births per 1,000 women, a figure unchanged from 2016, but the number of births to women aged 45 and over rose three percent from 2016 to 2017. There were 840 births to women 50 or older, essentially unchanged since the previous year, although the number has been increasing since 1997.