(Cover) - EN Showbiz - Khlo Kardashian is reportedly feeling under pressure to conceive.

The 27-year-old has been married to basketballer husband Lamar Odom for nearly two years but she is unfortunately said to be "having major problems" getting pregnant.

Us Weekly report that although her sister Kim thinks it "would be a dream" if all three Kardashian sisters got pregnant at the same time, Khlo is facing her own struggle.

Kim married NBA star Kris Humphries in a lavish ceremony last month and is said to want to start a family as soon as possible.

But for a second sister to have a baby before she does would devastate Khlo it is being claimed.

"Khlo is having major problems getting pregnant," an insider said. "If Kim were to get pregnant first, that would cause tension because it would highlight Khlo's struggle. She's just dying to have Lamar's baby."

Her elder sister Kourtney, who is already mother to 21-month-old Mason with boyfriend Scott Disick is also talking about having her second child in the near future.

Khlo has been doting on Lamar's two children Destiny, 13, and Lamar Jr, 10, but can't wait for it to be her turn to become a mother.

"Khlo would be happy if Kim got pregnant or if Kourtney had another baby," a confidant said. "But it would be hard to swallow. You can't help but be jealous of your sisters when they have something you want so much. That's normal! Not just in Kardashianland." (C) Cover Media