The celebrity couple, who are currently expecting their first child as well as filming a reality TV show together, recently had a huge fight that led to Kardashian deleting all traces of his fiance from his social media, reported Us magazine.
Although they have now made up, insiders claim Kardashian was struggling to cope with Chyna, who has a three-year-old son, King Cairo, with ex-boyfriend Tyga, having many other commitments in her life.
"Everything with Chyna is moving so fast. ... She's a single parent and filming the show and all of her other work commitments, so Rob has been feeling neglected by her. She has also been doing things on her own a lot with her girlfriends," a source said.
"Yes, it was a fight, but they will be over it and basically are. They've been spending a ton of time together and filming a show together. Add to that the stress of a new relationship and it's inevitable that there will be some tension and fighting. It was an explosive fight," a source said.