Things have gotten uncomfortable between Khloé Kardashian and her boyfriend Tristan Thompson's baby mama!

As fans of the reality star know, her basketball player beau, 25, is expecting a child with his ex, Jordy Craig — but she's upset over how much time he's spending with the 32-year-old.

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"Jordy wants Khloé to back off," a source tells Life & Style. "Tristan would be with Jordy at the doctor's office, and he'd be off in the corner FaceTiming Khloé."

The source adds, "It was absolutely infuriating to Jordy because she could barely get Tristan to focus on the birth of their baby… She feels completely disrespected by him and Khloé."

For more on the couple’s drama, pick up the latest issue of Life & Style, on newsstands now! And scroll through the gallery below for a look at what your favorite Kardashian exes look like now.