Rob Kardashian is frustrated that he has gained so much weight and took to Twitter to express his feelings. 

While the Kardashian-Jenner family enjoyed a luxurious vacation in Thailand, Rob, along with Kourtney Kardashian and Scott Disick were nowhere to be found, as they were back home in the states. 

On Wednesday morning, Rob posted a cryptic tweeted that indicated he may have been depressed about something, most likely his weight gain. 

"No one will ever understand how much it hurts," the tweet read. 

Moments later, Rob deleted his Twitter feed and rebooted his entire account. On Thursday, there was one tweet that read, "Mi Familia is home! Yeeee!"

Rob has struggled with his weight after gaining more than 50 pounds since breaking up with ex-girlfriend Rita Ora. 

Last December, he revealed his plans for losing the weight with Entertainment Tonight, confirming that he is currently taking supplements and working out twice a day. 

"I really needed a change. There's just a lot going on in my family, a lot of stress and negative attention. So, this is just part of that positive reset button. All I'm just trying to focus on is my health and just getting back to that happy point," he said. 

A source close to the family said Rob "hasn't been happy" lately amid rumors that mom Kris Jenner has urged him to lose weight.

"She's told him that if he wants to continue to be an active part of their family, he's going to attend a camp and lose the weight once and for all," another source revealed.

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