KIM KARDASHIAN I CAN STOP EATING!!!

Kim Kardashian's NOT a food-shoveling, 200-pound, fatso -- and Kim is telling friends the proof isn't in the pudding ... it's in the yogurt.

We're told Kim went to the doctor last week for a checkup, and she weighed in at 151 lbs ... way less that the 200 lbs the tabloids claim.

And there's even less. We're told she's gained a grand total of 23 pounds from the time Kanye West impregnated her.

Although there's an epic headline from one of the tabs -- "I Can't Stop Eating!" -- we're told a lot of this is just plain made up.  Por ejemplo ... "In Touch" ran a cover pic showing Kim shoving ice cream in her mouth.  Fact is ... the pic was taken in Monaco in 2009, when she was relatively tiny. 

And our Monegasque (Google it) spies tell us ... the cone is not topped with the fat stuff ... it's dairy free, sugar free yogurt with fresh strawberries.  Sounds disgusting.