- Photo: Todd Williamson/AP1 of 19
- Photo: John Shearer/AP2 of 19
- Photo: Steve Granitz/WireImage3 of 19
- Photo: PNP/WENN4 of 19
- Photo: Acer/Promotional5 of 19
- Photo: Jesse Grant/WireImage6 of 19
- Photo: Orchon/Retna Digital7 of 19
- Photo: JAWS/GSI8 of 19
- Photo: Facebook/.9 of 19
- Photo: ADHI/GSI10 of 19
- Photo: Peter/NPG11 of 19
- Photo: George Pimentel/WireImage12 of 19
- Photo: Retna Digital13 of 19
- Photo: ./WENN14 of 19
- Photo: WENN15 of 19
- Photo: Splash News16 of 19
- Photo: Peter/NPG17 of 19
- Photo: Mark J. Terrill/AP18 of 19
More Celeb News
- Mike Darnell Talks Fox Exit, 'American Idol,' Whether 'X Factor'MSNEntertainment 5/24/2013 4:46:42 PM
- 3 Reasons Lena Dunham Can't Laugh Off 'Girls' Porn ParodyMSNEntertainment 5/24/2013 4:35:33 PM
- YouTube's Most Popular Rappers Are White and Nerdy - and Bigger Than Bieber, PSYMSNEntertainment 5/24/2013 4:00:39 PM
- 'The East' Filmmakers Go From Dumpster-Diving to Sundance Darlings ... and Get a TMSNEntertainment 5/24/2013 3:43:13 PM
- WME Signs Departing Fox Exec Mike Darnell (Exclusive)MSNEntertainment 5/24/2013 2:11:54 PM
- Mike Darnell Talks Fox Exit, 'American Idol,' Whether 'X Factor'
"I was about two months pregnant. I was really sick," the star of "This Is 40" said when she returned for the Dec. 18 episode of the NBC talk show. "I was very nauseous. I had really bad morning sickness."
Fox continued, "It was so bad for me. ... I was convinced that I was, like, maybe birthing a vampire baby like the one in 'Twilight' -- you know what happens to Bella, where she's in cold sweats all the time -- and I felt like that was happening because I had no vitamins and nutrients, and I was just nauseous."
"Something not human was happening!" she added.
Luckily, Brian Austin Green's wife of two-and-a-half years didn't suffer for long. "The first trimester was really rough, and then I got to about 12 weeks and then it was fine," the actress said. "It was really a perfect pregnancy after that."
Fox -- already stepmom to Green's son Kassius, 10, from his previous relationship with actress Vanessa Marcil -- also opened up about giving birth on Sept. 27 at Cedars-Sinai Medical Center in Los Angeles. (Coincidentally, Reese Witherspoon and Jim Toth welcomed a son, Tennessee, at the same hospital that same day.)
"I thought I was going to be tough and the nurses would be like, 'She's a warrior princess! She doesn't need an epidural! She's amazing! We're such big fans!'" Fox admitted. "As soon as I got out of the car, I was already crying for an epidural. I was asking the security guard for an epidural!"
"This Is 40" is in theaters Friday, Dec. 21. "The Tonight Show With Jay Leno" airs weeknights at 11:35 p.m. on NBC.
This article originally appeared on Usmagazine.com: Megan Fox: Why I Thought My Son Noah Might Be a "Vampire Baby"
MORE ON WONDERWALL:
- 7 Wonders for May 24, 2013
- 7 Wonders of the Wall for May 23, 2013
- 7 Wonders of the Wall for May 22, 2013
- 7 Wonders of the Wall for May 21, 2013
- 7 of Rihanna's Worst Looks
- 7 Wonders of the Wall for May 17, 2013
- 7 Wonders of the Wall for May 16, 2013
- 7 Wonders of the Wall for May 15, 2013
- 7 Wonders of the Wall for May 14, 2013
- 7 Most Outrageous Gwyneth Paltrow Quotes
- 7 Wonders of the Wall for May 10, 2013
- 7 Wonders of the Wall for May 9, 2013
- 7 Wonders of the Wall for May 8, 2013
- 7 Wonders of the Wall for May 7, 2013
- 7 Best Bikini Bods
- 7 Wonders of the Wall for May 3, 2013
- 7 Wonders of the Wall for May 2, 2013
- 7 Wonders of the Wall for May 1, 2013
Check out some of Rihanna's worst wardrobe choices on 7 Wonders, hosted by Tim Kash.Watch Video »
Who Am I?
From Kim Kardashian to Jessica Alba, see the worst celeb sunburns.Watch Video »
Tori Spelling turns 40, plus more celeb stories on 7 Wonders, hosted by Tim Kash.Watch Video »
Khloe Kardashian showed off her svelte figure, plus more celeb stories on 7 Wonders.Watch Video »
- Party AnimalsCheck out some of Hollywood's biggest party animals.Watch Video »
- Carrie's ChangesSee how this country cutie has changed her looks over the years.Watch Video »
From Videos of Wonderwall
From MSN Entertainment
From Crowd Ignite