After dismissing pregnancy rumours, reality TV star Kim Kardashian says that she's "struggling" to fall pregnant for the second time with husband and rapper Kanye West.

The 34-year-old star, who has a daughter -- North West, shared about her struggle at the E! International Press Junket here Friday, reports mirror.co.uk.

"It's been more challenging to get pregnant the second time around. When you're not planning it, it happens. It's just how god works,Â" she said.

"And when you want it so bad, it's not happening," Kardashian added.

The couple denied reports surrounding Kardashian's pregnancy around Christmas 2014.