When it comes to Rob Kardashian and Blac Chyna's current relationship status, it's complicated.
Following the 29-year-old reality star's drama with his famous family
on Monday -- when he claimed the Kardashians didn't invite Chyna to a baby shower they were planning and tweeted sister Kylie Jenner's phone number
-- a source tells ET that even Rob and Chyna themselves don't see eye-to-eye when it comes to whether or not they're still in a relationship.
"If you ask Rob, he'll say they're having issues. If you ask Chyna, she'll say they are not together," the source says. "Their relationship is not in a good place right now but they are working on it."
Still, the chances of the two reconciling "are pretty high," the source notes.
According to the source, Rob is "in a bad place right now" due to the stress of Chyna being pregnant, as well as filming their new E! reality show, Rob & Chyna
. Rob also apparently "wasn't ready" to be back in the spotlight -- after previously being away from Keeping Up With the Kardashians for two years
-- but felt pressured to work again and "get his life together"once Chyna got pregnant.
"The stress led to major fights," the source says. "Chyna and Rob are not in a good place right now, which then sets him into a downward spiral."
In a new preview of this Sunday's Rob & Chyna, Chyna notes that Rob has a hard time when around a group of people. When Scott Disick suggests having a barbeque so that the 28-year-old model can finally meet Rob's friends, Chyna is hesitant.
"Do you think it should be a surprise? Because I feel like Rob always gets nervous and chokes up when he's around a lot of people," Chyna tells Scott.
"I don't know none of Rob's friends, and that's just different," she later tells the cameras.
Rob & Chyna airs Sundays at 9 p.m. on E!
"He goes through his dark periods," the source said. "He gets depressed and doesn't want to really do anything, doesn't leave the house. It got better for a bit when he first started dating Chyna, but he's in a rut now."