Angelina Jolie has sparked fears that she is suffering from postpartum depression, as the mother of six has become sluggish and prone to severe “mood swings” since giving birth to twins in July.

“Angelina slips into depression mode all the time. She has been trying to control her emotions….”

The Academy Award-winning stunner is finding it hard to cope with newborn twins Vivienne Marcheline and Knox Leon , who have been diagnosed with colic, a condition where babies cry excessively for no reason.

“Angelina seems like she’s lost her identity,” a concerned source says in the September 15 issue of In Touch Weekly.

“She has been staying in bed most of the time. All she does is nap.” The insider adds, “She cries at the drop of a hat and laughs at inapproriate times…She has little or no appetite and has to force herself to remember to eat because she is still breast-feeding.”

“Her mood swings have been hard on her entire family,” says In Touch, who claim Angelina’s out-of-character behavior has even her children raising eyebrows.

Angelina vowed to begin “trying to control her emotions” after sons Pax, 4, and Maddox, 7, began regularly asking dad Brad Pitt, “What’s wrong with Mommy?”

There is one member of the Jolie-Pitt brigade who is having a tough time avoiding the “Wrath of Angie:”

“Angelina feels that Brad has it easy. He had the kids without the pain of birth, and he can just jet off whenever he feels like it.”

“Angie is fed up and wishes he’d stick around more,” her pal says.

Does Angelina Jolie need help? “Everyone around her is hoping that she will tallk to someone about how she is feeling.”