The timing on all of this is just heartbreaking.

X17online has exclusively learned that Khloe Kardashian's mom Kris Jenner and sister Kourtney are flying to Cleveland right now to be by her side before she has a scheduled C-section on Friday morning, and Kim will arrive by tomorrow morning.

In the wake of baby daddy Tristan Thompson's explosive cheating scandal, the reality star already has her team moving her belongings out of his home, and plans to return to Calabasas immediately following the birth of her daughter.

Our source tells us:
    "Khloe is devestated and humiliated. She's trying to keep it together for the sake of the baby's health, but she's done with him. She has changed her birth plan, and no longer will allow Tristan to be in the room when she gives birth. Immediately after, she plans on leaving Cleveland and never returning."

Another insider tells us that the K clan is "freaking out," and doing everything they can to make all the arrangements so that Khloe doesn't have to stress over how things are going to play out.

    "Kris has been working on coordinating a private jet with a medical staff to get Khloe and the baby safely from Cleveland to LA. She's also talking to their lawyers about Khloe filing for sole custody of the child. She's in absolute disbelief that Tristan has done this to her daughter, and now she's out for blood."

What a nightmare during what is supposed to be such a happy time!