AP

When the stork visited Brittany and Jason Deen in Sacramento, Calif., it delivered not one but three bundles of joys, and a world record as well.

Sidney, Elliot, and Jenson Deen weighed over 20 pounds combined at birth Nov. 8, breaking last year's Guinness Book of World Records for triplets total weight set at 18 pounds and 11 ounces in Raleigh, N.C.

"Their [Brittany and Jason] pregnancy is completely spontaneous. Brittany conceived the three boys without use of any fertility treatment. The chances of such an occurrence are one in 8,000,"said Dr. William M. Gilbert at Sutter Medical Center, where Brittany delivered her boys, told ABC News.

Deen insisted on carrying full-term and was delivered at 37 weeks by C-section. "We usually deliver women with multiple pregnancies at 35 or 36 weeks because we are afraid of post-partum hemorrhaging which might happen after 36 weeks… That was our main worry with Brittany," he said.

Sidney weighed in at 7.8 pounds, Elliott at 7.3 pounds and Jenson at 5.5 pounds. Deen, who gained 85 pounds during pregnancy and has already lost 50, had to follow a regimen that would sustain her while nurturing three fetuses.

"There was no cap for how much I would eat. I ate like a hobbit… I would eat a meal every other hour… My diet was high in calories, high in fat, high in protein, high in dairy… On one day I would eat proteins that amounted to a dozen eggs," Deen told ABC News.

Sidney is still in the hospital under observation and is expected to be released early next week. "Infants are not discharged until we make sure that their eating and temperature are maintained. We want to make sure Sidney is doing well on both," said Gilbert who is also the medical director of Sutter Moms of Multiples. MOMs is a Sutter Medical Center care facility that provides comprehensive support to mothers expecting multiple babies.

Deen, an oncology nurse at UC Davis Medical Center, joined MOMs as soon as she heard she was pregnant. At MOMs, Deen was mentored on how to follow a diet to nourish her and the fetuses. She attended weekly classes and appointments to learn about the physical as well as the psychological effects of such a pregnancy.

"At MOMs they taught us all the nuts and bolts of what it takes to have and raise multiple babies for the first two years," said Deen. "There's no way we could have gotten that far without the staff at MOMs," she said.

Deen said she's looking forward to Sydney coming home. "I feel best when I have the boys around," said Deen. Already, the boys' personalities are showing. Deen said that Jenson's the fighter as he competed with his brothers for food during pregnancy. Elliot is the snuggly yet perky one, Sydney is very mellow and "calm as can be."

Deen's husband Jason has been with her every step of the way, she said. "Jason jumped into parenting with so much grace and humor. I am amazed how well he's handling things and how he's handling my hormones!" Deen quipped.