The reality TV star, 34, blasted the 'sick' rumours in a lengthy post on Instagram (Friday 3 July).
Promising to share a make-up tutorial with her 37.8million fans, Kim chose to set the record straight about a few other beauty myths...
Alongside some stunning selfies, she wrote: "Can't wait to show u this contouring make up tutorial for my changing pregnant face!
"No I don't do fillers or botox when pregnant like some tabloids are reporting, you would have to be really sick to endanger your child like that!"
Clearly keen to set the record straight, Kim continued: "Anyone who has been pregnant or gained weight knows your face totally changes! My nose gets bigger, cheeks fuller & my lips swell up.
"The challenge is trying to adjust the make up to make me feel normal & we will share our tricks on KimKardashianWest.com @styledbyhrush."
Kim is expecting her second child with husband Kanye West. They announced last month that they are expecting a son.
On a lighter note, Kim also shared a funny snap of her daughter North West appearing to have a little toddler tantrum...
In the photo, super cute North is wearing a Minnie Mouse safety helmet, oversized backpack and holding a green umbrella - clearly wanting to wear it all!
Kim joked: "The struggle is real! We cannot go out of the house like this!!! LOL."
Check out the 10 reasons we want to be Kim Kardashian!
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!