Kim Kardashian had a scary medical discovery during the Season 7 premiere of "The Kardashians" -- she suffered an aneurysm ... and she's blaming Kanye West .

Check the clip -- she's at the doc getting a routine MRI when the "little aneurysm" is discovered, and she's told aneurysms can be caused by stress.

BTW, an aneurysm is a "bulge or ballooning in a blood vessel in the brain," according to the Mayo Clinic . A ruptured aneurysm causes internal bleeding ... which can be life-threatening if untreated. Hulu

The Skims founder goes on to theorize that her drama-filled divorce from Kanye West -- who now goes by Ye -- may have led to the aneurysm. And she points out the obvious ... Ye is still very much in her life, as they share 4 kids -- North , 12, Saint , 9,

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