Kim Kardashian and Kanye West had been 'fighting' ahead of his hospitalization

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Kim Kardashian and Kanye West had been "fighting" ahead of West's sudden hospitalization, sources tell Us Weekly.

Things haven't been the same for the couple since Kardashian's terrifying robbery at gunpoint in Paris on Oct. 3, and insiders close to the pair say that "it's just been hell for them" trying to recover from the trauma of the incident.

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While Kardashian retreated from the spotlight and stayed home with her children North and Saint, West returned to his Saint Pablo Tour and continued traveling the country. Their constant separation reportedly left Kardashian feeling a lack of support from her husband.

"She felt like now she needed him to be stable and her rock instead of the other way around," a source told Us. "Kanye's so used to getting Kim's constant support and coding, but it's always about Kanye."

See photos of the couple together:

41 PHOTOS
Kanye West and Kim Kardashian West through the years
See Gallery
Kanye West and Kim Kardashian West through the years
LOS ANGELES - SEPTEMBER 25: Music recording artist Kanye West, left, and socialite Kim Kardashian attend the grand opening of Intermix on September 25, 2007 in Los Angeles, California. (Photo by Chris Weeks/WireImage)
PARIS, FRANCE - MARCH 06: Kim Kardashian and Kanye West attend the Kanye West Ready-To-Wear Fall/Winter 2012 show as part of Paris Fashion Week at Halle Freyssinet on March 6, 2012 in Paris, France. (Photo by Michel Dufour/WireImage)
NEW YORK CITY, NY - APRIL 21: Kanye West and Kim Kardashian shop in Soho on April 21, 2012 in New York City, New York. (Photo by Christopher Peterson/BuzzFoto/FilmMagic)
LOS ANGELES, CA - MAY 12: Kim Kardashian and rapper Kanye West talk from their courtside seats before the Los Angeles Lakers take on the Denver Nuggets in Game Seven of the Western Conference Quarterfinals in the 2012 NBA Playoffs on May 12, 2012 at Staples Center in Los Angeles, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Harry How/Getty Images)
LONDON, UNITED KINGDOM - MAY 18: Kim Kardashian and Kanye West are seen on May 18, 2012 in London, United Kingdom. (Photo by TOE/Bauer-Griffin/GC Images)
CANNES, FRANCE - MAY 23: (L-R) Kanye West and Kim Kardashian attend the 'Cruel Summer' Premiere during the 65th Annual Cannes Film Festival at Palm Beach on May 23, 2012 in Cannes, France. (Photo by George Pimentel/WireImage)
LOS ANGELES, CA - JULY 01: (L-R) Beyonce, Jay-Z, Kanye West, and Kim Kardashian attend the 2012 BET Awards at The Shrine Auditorium on July 1, 2012 in Los Angeles, California. (Photo by Johnny Nunez/WireImage)
MIAMI BEACH, FL - OCTOBER 14: (L-R) Kanye West and Kim Kardashian are sighted leaving at Prime 112 Steakhouse on October 14, 2012 in Miami Beach, Florida. (Photo by Aaron Davidson/FilmMagic)
NEW YORK, NY - OCTOBER 22: Kayne West and Kim Kardashian attend the Angel Ball 2012 hosted by Gabrielle's Angel Foundation at Cipriani Wall Street on October 22, 2012 in New York City. (Photo by Theo Wargo/WireImage for Gabrielle's Angel Foundation)
MIAMI BEACH, FL - OCTOBER 31: Kim Kardashian and Kanye West arrive at Kim Kardashian's Halloween party at LIV nightclub at Fontainebleau Miami on October 31, 2012 in Miami Beach, Florida. (Photo by John Parra/WireImage)
LOS ANGELES, CA - DECEMBER 25: Kim Kardashian and Kanye West attend the NBA game between the Denver Nuggets and the Los Angeles Clippers at Staples Center on December 25, 2012 in Los Angeles, California. The Clippers defeated the Nuggets 112-100. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Victor Decolongon/Getty Images)
LAS VEGAS, NV - DECEMBER 31: (Exclusive Coverage) Kanye West and Kim Kardashian celebrate New Years Eve countdown at 1OAK Nightclub at the Mirage on December 31, 2012 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
PARIS, FRANCE - MARCH 03: Kim Kardashian and Kanye West attend the Givenchy Fall/Winter 2013 Ready-to-Wear show as part of Paris Fashion Week on March 3, 2013 in Paris, France. (Photo by Bertrand Rindoff Petroff/GettyImages)
NEW YORK, NY - APRIL 23: Kanye West and Kim Kardashian are seen in Soho on April 23, 2013 in New York City. (Photo by Alo Ceballos/FilmMagic)
PARIS, FRANCE - SEPTEMBER 28: Kim Kardashian and Kanye West are seen on the 'Avenue Montaigne' on September 28, 2013 in Paris, France. (Photo by Marc Piasecki/WireImage)
US musician Kanye West and partner Kim Kardashian pose prior to Givenchy 2014 Spring/Summer ready-to-wear collection fashion show, on September 29, 2013 in Paris. AFP PHOTO / PIERRE ANDRIEU (Photo credit should read PIERRE ANDRIEU/AFP/Getty Images)
BEVERLY HILLS, CA - OCTOBER 24: Recording artist Kanye West and TV personality Kim Kardashian attend Dream for Future Africa Foundation Inaugural Gala honoring Franca Sozzani of VOGUE Italia at Spago on October 24, 2013 in Beverly Hills, California. (Photo by Michael Buckner/WireImage)
LAS VEGAS, NV - OCTOBER 25: (EXCLUSIVE COVERAGE) Kanye West and Kim Kardashian celebrate Kim Kardashian's 33rd birthday at Tao Las Vegas on October 25, 2013 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
NEW YORK, NY - NOVEMBER 22: Kayne West, North West and Kim Kardashian seen on the streets of Manhattan on November 22, 2013 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - NOVEMBER 23: Kim Kardashian and Kayne West are seen in Soho on November 23, 2013 in New York City. (Photo by Alo Ceballos/FilmMagic)
MIAMI BEACH, FL - DECEMBER 04: Kanye West (L) and Kim Kardashian attend DuJour Magazine's event to honor artist Marc Quinn at Delano South Beach Club on December 4, 2013 in Miami Beach, Florida. (Photo by Eugene Gologursky/Getty Images for DuJour Magazine)
PARIS, FRANCE - JANUARY 19: Kim Kardashian and Kanye West are seen on January 19, 2014 in Paris, France. (Photo by Marc Piasecki/Getty Images)
NEW YORK, NY - FEBRUARY 22: Kim Kardashian and Kanye West are seen on February 22, 2014 in New York City. (Photo by NCP/Star Max/GC Images)
NEW YORK, NY - MAY 05: Kim Kardashian (L) and Kanye West attend the 'Charles James: Beyond Fashion' Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City. (Photo by Mike Coppola/Getty Images)
PARIS, FRANCE - MAY 19: Kim Kardashian and Kanye West are seen strolling on the 'Avenue Montaigne' on May 19, 2014 in Paris, France. (Photo by Marc Piasecki/GC Images)
LONDON, ENGLAND - SEPTEMBER 02: Kim Kardashian (L) and Kanye West attend the GQ Men Of The Year awards in association with Hugo Boss at The Royal Opera House on September 2, 2014 in London, England. (Photo by David M. Benett/Getty Images)
PARIS, FRANCE - SEPTEMBER 24: Kanye West, Kim Kardashian and their daughter North West attend the Balenciaga show as part of the Paris Fashion Week Womenswear Spring/Summer 2015 on September 24, 2014 in Paris, France. (Photo by Bertrand Rindoff Petroff/French Select/Getty Images)
PARIS, FRANCE - SEPTEMBER 25: Kim Kardashian and Kanye West attend the Lanvin show as part of the Paris Fashion Week Womenswear Spring/Summer 2015 on September 25, 2014 in Paris, France. (Photo by Rindoff/Dufour/Getty Images)
HOLLYWOOD, CA - OCTOBER 20: (EXCLUSIVE COVERAGE) Kanye West (L) and TV personality Kim Kardashian attend Teyana Taylor's VII listening event presented by Def Jam, GOOD Music and MVD Inc at Siren Studios on October 20, 2014 in Hollywood, California. (Photo by Chelsea Lauren/WireImage)
LOS ANGELES, CA - NOVEMBER 01: Recording artist Kanye West (L) and TV personality Kim Kardashian attend the 2014 LACMA Art + Film Gala honoring Barbara Kruger and Quentin Tarantino presented by Gucci at LACMA on November 1, 2014 in Los Angeles, California. (Photo by Jason Kempin/Getty Images for LACMA)
NEW YORK, NY - JANUARY 08: (EXCLUSIVE COVERAGE) John Legend, Chrissy Teigen, Kim Kardashian and Kanye West attend John Legend Celebrates His Birthday And The 10th Anniversary Of His Debut Album 'Get Lifted' at CATCH NYC on January 8, 2015 in New York City. (Photo by Dimitrios Kambouris/Getty Images for EMM Group)
BEVERLY HILLS, CA - FEBRUARY 07: Kim Kardashian and Kanye West arrive at the Roc Nation Grammy Brunch 2015 on February 7, 2015 in Beverly Hills, California. (Photo by Amanda Edwards/WireImage)
LOS ANGELES, CA - FEBRUARY 08: Rapper Kanye West (L) and TV personality Kim Kardashian attend The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
NEW YORK, NY - FEBRUARY 14: Kim Kardashian, North West and Kanye West leave a fashion show on February 14, 2015 in New York City. (Photo by James Devaney/GC Images)
LONDON, UNITED KINGDOM - FEBRUARY 26: Kim Kardashian and Kanye West at Mr Chows restaurant on February 26, 2015 in London, England. (Photo by Mark Robert Milan/GC Images)
PARIS, FRANCE - MARCH 05: Kim Kardashian and Kanye West attend the Balmain show as part of the Paris Fashion Week Womenswear Fall/Winter 2015/2016 on March 5, 2015 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)
LOS ANGELES, CA - APRIL 05: Kim Kardashian, Kanye West and North West are seen at church for Easter in Los Angeles on April 05, 2015 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
NEW YORK, NY - APRIL 21: Kanye West (L) and Kim Kardashian attends the 2015 Time 100 Gala at Frederick P. Rose Hall, Jazz at Lincoln Center on April 21, 2015 in New York City. (Photo by Andrew Toth/FilmMagic)
NEW YORK, NY - MAY 04: Kanye West (L) and Kim Kardashian attend the 'China: Through The Looking Glass' Costume Institute Benefit Gala at the Metropolitan Museum of Art on May 4, 2015 in New York City. (Photo by Mike Coppola/Getty Images)
LOS ANGELES, CA - AUGUST 30: TV personality Kim Kardashian and recording artist Kanye West arrive at the 2015 MTV Video Music Awards at Microsoft Theater on August 30, 2015 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
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When he was home, though, West was erratic, reportedly "up all night ranting about things" and "completely freaked out" following Kim's brush with death.

"The mere thought of his wife being taken from him was too much," another source said. "It was like his mother's death. Seeing Kim close to death did a major number on him. It sent him into a tailspin."

That downward spiral included a slew of incidents at his subsequent tour stops, including storming off stage, ending concerts early, slamming fellow celebrities and, perhaps most notably, saying that he didn't vote in the 2016 presidential election -- but, if he had, he would've voted for Donald Trump.

These incidents allegedly made West "impossible to live with," which led to their fighting.

"Kanye's behavior took a huge toll on their marriage," an insider revealed. "But Kim feels relieved he is getting the help he needs. She thinks this is what it will take to save him -- and help their marriage."

In recent days, reports have surfaced that West, still undiagnosed, will remain hospitalized until further notice to keep him under watch. Kardashian had been slated to make her first official public appearance since the robbery at last week's Angel Ball in NYC, but she returned home when she found out West had been admitted to the UCLA Medical Center.

See Kim Kardashian's sexiest Instagram photos of 2016:

67 PHOTOS
Kim Kardashian's sexiest Instagrams of 2016
See Gallery
Kim Kardashian's sexiest Instagrams of 2016
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Today on my app see the red carpet cleavage tape trick I've been doing for years!
Happy Birthday @steph_shep I love this pic of us!
When you're like I have nothing to wear LOL
Wired πŸ“· Mert & Marcus
#loveadvent @kimkardashian #jameslima @simonrobins100 @coach @agentprovocateur πŸ’•πŸ’•πŸ’•πŸ’•
Hair flip & eye roll at the same damn time!
✨ golden ✨
Balenciaga. No make up today.
Parisian Vibes
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Tonight
Bathroom selfie right before Pablo hits the stage
Miami
You're so professional @steph_shep So responsible & thanks for never drinking on the job!
In all seriousness I'm going to be totally selfless for this one last post. Thanks for being my main bitch! Happy Birthday!
Seriously @steph_shep thanks for always having my back and eating all my left overs so they don't go to waste!
Thank you @riccardotisci17 LOVE this @givenchyofficial couture gown for the Harper's Party!
Silver Surfer
Closed eyes, see things
Vintage Galliano & Kanye West x Jacob the Jeweler's new collection for the VMA's
Bikini tennis anyone? 🎾
Beach selfies of course! πŸšπŸ“·πŸš
Wait but first...
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Selfish in Mexico
I'm like fuck critics you can kiss my whole asshole 🍾
🎼 I'm going out tonight, it's going down....🎼
In honor of @styledbyhrush birthday a month ago LOL she taught me how to twerk on this trip so I'm posting it for her 😜
New KIMOJI Merch available for just the weekend! Go to KimKardashianWest.com or my app to get it!
#VacayVibez @golden_barbie
Best trip ever! follow me on snap
Cuban vibes!!! Throwback to when we were in Cuba! Can't wait to watch tonight's episode with you guys! A new episode of KUWTK starts soon!
Tune into Keeping Up With The Kardashians tonight on E to see all the BYS at @fergie Milf $ video!
More BTS of @fergie's video Milf $ video on my app!
All the BTS pics from the Milf $ video are on my app today!
Pre photo shoot fittings
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#MILFMONEY
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#TBT Hamptons
Wait u didn't think I would forget about National Selfie Day! DUH
New obsession @sugarbearhair 🐻 I have two of these a day as part of my hair care routine. They are delish! #sugarbearhair #sp
Obsessed with the new Kimoji phone case! There's not many left so get it now on my app or KimKardashianWest.com #KimojiMerch
GQ πŸ“· Mert & Marcus
So many amazing pics from @GQ I can't wait for you to see them all! Thank you @jimmooregq for this amazing cover! πŸ“· @mertalas @macpiggott
The cover of @GQ is here!!! This was seriously a dream come true!!!! πŸ“· @mertalas @macpiggott
Let the transformation begin #BazaarIcons
TheWifeOfPablo
Happy birthday to my best friend! I usually would be scared for us getting older but as each year passes I'm just happy we have more time on this earth together! I love you so much and hope this year brings you so much happiness
Hey New York
Wore my new Yeezy Season 2 heels with an orange 🍊 Pablo shirt yesterday in support of gun violence awareness day. Something has to change πŸš«πŸ”«
#secretproject ✨coming soon @mertalas @macpiggott #mertandmarcus
Thank you @peter_dundas for making me this gorgeous @roberto_cavalli dress. And @lisaeldridgemakeup @dayaruci for glam with @lorraineschwartz jewels.
My @vogueaustralia cover is on stands now! πŸ“· @lachlanbailey
My visit to Ernest Hemingway's house in Cuba is on my app today! Link in my bio
This diamond cuff earring though πŸ’ŽπŸ’ŽπŸ’Ž@lorraineschwartz
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Thank you Hakassan for having me! Thank you @olivier_rousteing & @balmain for dressing me! And thank you @makeupbyariel @cesar4styles for glamming me!
Cocktails with Khloe vibes today! 🍸🍾🍺🍹Hair @justinemarjan Make Up @makeupbyariel
#liberated
Paris flashback BTS on my app! #LinkInBio
Yeezy Vibes @makeupbymario @tokyostylez
Sleek ponytail tutorial today on my app with @michaelsilvahair
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