Angelina Jolie's Pregnancy Problem

Carrying twins is proving to be a heavy load for Angelina Jolie.

Angie was happy and glowing during her first pregnancy with daughter Shiloh. But this time, the going is tough. As she enters her third trimester, sources tell Star that the 32-year-old actress is plagued by a host of complications — including edema or swelling, gestational diabetes, fatigue and relentless nausea.

In January, Star broke the news that Angie and her partner, Brad Pitt, are expecting twins and that she was indulging her pregnancy cravings. She even requested Oreos and Doritos at an awards show in Santa Monica on Jan. 7.

But no more! "Angie has gestational diabetes," an insider tells Star. "She found out about a month ago and has been trying to keep it under wraps. She's been seeing a nutritionist about it — frequently." In fact, she's had to drastically change her diet, which has not been easy, considering her history of food issues. At one point, as she grieved for her late mother, Marcheline Bertrand, her weight plummeted to 98 pounds. "She doesn't pay much attention to food," her brother, James Haven, admits. "But it's different when she's pregnant."

Gestational diabetes isn't Angie's only problem: She's also dealing with painful edema — swelling caused by fluid buildup. "Her feet are so swollen that her shoes have gone up a half size at least," a source tells Star.

Fatigue is another problem, say sources, and Angie has had a particularly tough time since taking the kids to Texas, where Brad is filming Tree of Life. "She's constantly tired," says a source. "She's sick and irritable and feels heavy and weak."

Find out about Angelina's new diet (buh-bye Doritos, hello mackerel!) and what Brad is doing to make things easier on her in the April 7 issue of Star, on sale now.