Kim is dating Kanye West, 35, who had announced their first child is expected in July.
The 32-year-old revealed Tuesday that her pregnancy was a pleasant surprise as she suffers from the same fertility issues as her younger sister Khloe.
Khloe has been very open about her fertility issues and I think I was always really kind of quiet about mine, and I have similar issues.
It was a pleasant surprise when so many doctors were telling me one thing and then the opposite happens, and that's just an exciting moment, said Kim.
She definitely wants to get married again, but her divorce from her estranged husband Kris Humphries has yet to come through.
I am so content with how things are right now. And how life is and we are so happy. We definitely want that (marriage) in the future, but I'm not in a rush, she said.