Kim Kardashian and Kanye West 's new bundle of joy will be their last ... doctors have warned her another pregnancy would be like playing with fire.<br />Kim's been open about her pregnancy struggles, suffering from placenta accreta - a potentially life threatening condition - during both.<br />A source close to the family tells us Kim is also scared of another extremely painful birth, like the one with Saint ... and that's helped her make the decision easier.<br />As for Saint West - we're told he's the perfect baby - eating great, sleeping a ton and barely crying ... the opposite of North.
