Kim Kardashian is convinced she's going to have another baby ''really soon''.

The 33-year-old star believes she and husband Kanye West, 37, will give their 12-month-old daughter North a little sibling in the near future after a psychic predicted she would fall pregnant any day now.

Speaking to her sister Khloé, 30, and brother Rob, 27, in a preview of Sunday's (06.07.14) episode of 'Keeping Up with the Kardashians', Kim said: ''[My psychic said] I'm going to get pregnant really soon.''

The spiritualist - who pointed out Kim cries herself to sleep at night - also had some advice for Khloé and Rob.

Khloé - who has spoken publicly about her struggles to fall pregnant - asked Kim: ''Am I going to have any kids?''

The brunette beauty replied: ''She said you should get a sperm donor and the guy will come later.''

However, before Khloé had a chance to comment, Kim turned to Rob, who has battled with severe depression after piling on the pounds recently, and said: ''Oh she said you should get a puppy and you're not bipolar.''

The teaser clip shows the trio working out in the back garden as they lunge between stairs to shape up for Kim's wedding day, which took place last month in Florence, Italy.

However, the reality TV star's attitude towards fitness and healthy eating in the run up to her big day was starting to irritate Khloé.

Speaking to the camera, she said: ''All Kim does is talk about fitness and what she's eating. I just feel like everything is kind of like a competition.''