Kim Kardashian West gets ''a little feisty'' when she's pregnant.

The 34-year-old reality TV star, who is expecting her second child with husband Kanye West, lashed out critics from spreading false rumours about her unborn baby on Twitter earlier this week, but admits she was ''just bored.''

She said: ''I guess I get a little feisty when I'm pregnant. So I was just responding to people that come up with the most ridiculous things as if they're facts. So I was like, I might as well just say whatever I want.''

Asked about speculation she is carrying twins, she added: ''It's ridiculous rumours. I can't wait till my website's up so I can just say whatever I want, when I want.''

The 'Keeping Up with the Kardashians' star, who already has 23-month-old daughter North, is currently battling laryngitis and morning sickness.

She told E! News: ''I have laryngitis, so I'm a little under the weather. I lost my voice.''

Kim is planning to ''slow down'' in the coming months, but is still feeling energetic enough to travel a lot for work.

She said: ''You know, I'm definitely going to slow down a lot after this. You know, I have a couple more months at least that I think I'm good to travel.''