Rob Kardashian was reportedly rushed to the hospital last night.

According to a report, Kardashian's on-and-off fiance, Blac Chyna, who recently gave birth to his first child, and his mother, Kris Jenner, were spotted at an emergency room in Hidden Hills on Wednesday after Kardashian allegedly went into "medical distress."

"Chyna and Kris arrived separately -- Kris was with Corey Gamble -- and rushed into the ER at 9:45 PM near Hidden Hills, where the family lives," TMZ told readers this morning. "Sources connected with the family confirm Rob had checked himself in earlier in the evening... Rob and Chyna have been living separately, which explains why she showed up later."

At the time of the report, rumors were swirling in regard to a possible mental breakdown, but hours later, it was suggested that Kardashian had actually checked himself into the hospital due to a diabetes flared up.

"He had been doing ok lately but the stress from his turbulent relationship with Blac Chyna drove him to eat excessively and he gained an alarming amount of weight recently ... causing him to lose control over his diabetes," the outlet explained.

While Kardashian is reportedly still in the hospital, he recently returned to Instagram, where he promoted a weight loss program from Fit Girls Guide.

"Starts MONDAY!" he wrote. "TAP the link in their bio @fitgirlsguide to join the 01/02 challenge! The 28 DAY JUMPSTART includes.... Full Meal Plan, Full Exercise Plan, Weekly Grocery Lists, No Equipment Required and Gluten Free & Vegetarian Options!"

To hear more about Kardashian's hospitalization, check out the E! News report below.

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