Khloe Kardashian has decided to postpone her pregnancy plans.

The 28-year-old 'Keeping Up With The Kardashians' star - who has been open about her struggles to conceive with her husband Lamar Odom and was recently said to be is determined to get pregnant this year - has decided she has plenty of time to have a baby in the future and is no longer stressing about her fertility issues.

'The X Factor' USA co-host's sister Kim, 32, who is expecting her first child in early July with rapper Kanye West, told E! News: ''She texted me the other day that thank god it's me, not her. She's not sure if she's ready.

''It's funny, you know, you think you want something so badly, then I think she kind of realised, 'I have time. I'm 28. I'm good.'

''I've read that 'she's devastated' and things like that, and none of it's true.''

Khloe also hit back at speculation she is desperate to have a baby now that Kim is having one.

Writing on her blog on Wednesday (16.01.13), she said: ''I'm happily married to a wonderful man and fall in love with him more and more each day, and we'll have a baby when god wants us to and when the time is right.''

Khloe recently revealed she is starting off the 2013 with a positive attitude and urged others to do the same.

She tweeted: ''Surround yourself with the positive. Misery loves company. Don't get sucked into the negative way of life. Mind over matter. #PositiveOutlook (sic).''

Meanwhile, the reality TV star has admitted she is not yet certain if she will return to host another season of 'The X Factor' USA alongside Mario Lopez.

She told E! News: ''I hope [I'll be back next season]! We won't know until the final hour. I have no idea!''