Khloe Kardashian has always been vocal about her struggles to have a baby, but this time sister Kim Kardashian is voicing her own troubles. The 34-year-old reality star and husband Kanye West welcomed daughter, North, in June 2013.

Over the past several months, Kim has been trying to get pregnant with baby number two, but is having a very difficult time. According to the Daily Mail, the "Keeping Up With the Kardashians" star said her first pregnancy was easy, but this time around it's a lot tougher.

Kim also revealed that - with her husband's blessing - she is documenting her struggles for the upcoming season of the E! show.

"It's been more challenging to get pregnant the second time around," she told reporters at the E! International Press Junket in Los Angeles, the Daily Mail reported. "When you're not planning it, it happens. It's just how God works. And when you want it so bad, it's not happening."

According to a previous report by TMZ, Kim and West have been visiting fertility doctors every month hoping for some good news. On a sneak peek of the upcoming tenth season, it was teased that one of the Kardashian girls could be pregnant.

During the clip, Kim is seen getting an ultrasound when a doctor says, "We want to see another pregnancy some time soon." She is also seen carrying a tray of pregnancy tests, and when Khloe picks one up it reads "pregnant."

Khloe further hinted at a pregnancy when she Instagrammed a photo of the positive pregnancy test surrounded by her face, mom Kris Jenner, Kourtney Kardashian and Kim. The words "Who's pregnant? Kim Khloe Kendall" were written on the picture with the caption, "I think we could rule miss menopause out of this equation," referring to Kris Jenner.