they're already best friends," said Thistlethwaite, 32. "I can't believe they were holding hands. That's amazing."

Jenna was born first at 4 pounds, 2 ounces and 17 inches, with Jillian following 48 seconds later at 3 pounds, 13 ounces and 17.5 inches.

They were moved temporarily to Akron Children's Hospital because they needed breathing assistance. Thistlethwaite expects to be released from Akron General on Tuesday, while the girls will remain in the hospital two to four weeks.

Dr. Melissa Mancuso helped deliver the twins, one of several amniotic pairs she has helped deliver in 11 years. She said the twins are at risk during pregnancy of entanglement of umbilical cords, which can cause death. Another woman at Akron General is expected to give birth later this week to monoamniotic twins.

Sarah and Bill Thistlethwaite, of Orrville, Ohio, have a son, Jaxon, whose first birthday was Jan. 27. That's the day they also found out she was carrying twins.

"All I could do was laugh," said Bill, 35.

They rushed to prepare their home for the twins, and Sarah was soon on bed rest.

A middle school math teacher, she went into the hospital on March 14.

"It's hard, it really is," she said of extended bed rest. "It was very mentally challenging knowing I have to sit here all day."

Besides television, books and "trashy gossip magazines," she viewed YouTube to learn how to crochet baby hats.

The girls were born at 33 weeks and two days. Mancuso said there were only minor issues during the pregnancy.

Sometimes the girls would kick the monitors off.

"I don't know what they're doing to each other," Sarah said jokingly of her "sweet girls."