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Life may look like a bowl of cherries when Angelina Jolie and Brad Pitt appear in public, but a new report suggests life behind the scenes is, well, nauseating.

According to Life & Style magazine, the couple’s joy over the upcoming additions to their family is tempered by Jolie’s difficult pregnancy.

“Angelina’s having a very hard time, and it’s making her miserable,” a friend revealed to L&S. “She tires out very easily.”

Because of Jolie’s jet-set lifestyle and hectic work schedule, the affects of low-energy catch up with quickly. “It’s taking a toll on her she feels exhausted when it’s time to get up,” the close source explained. “She and Brad tried a special foam-rubber mattress cover, but nothing helped.”

Allegedly, exhaustion isn’t the only problem Jolie’s facing. “Angelina’s been feeling weak,” the pal added.

Jolie, 32, is widely reported to be pregnant with twins. She has three adopted children, Maddox, Pax, and Zahara, as well as a biological daughter, Shiloh, with Pitt, 44.