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The This is 40 actress had "pretty bad morning sickness" in her first 12 weeks. "I was really sick."

She added, "It was so bad for me, actually, that I felt like I was maybe, like, birthing a vampire baby, like the one from Twilight," Megan joked. "You know what happens to Bella - where she's in like cold sweats all the time? I felt like that was happening, because I had no vitamins and nutrients. I was just nauseous."

After that, she says, "It was really a perfect pregnancy."