Khloe Kardashian has long been patient as she struggles to get pregnant with her first child, but on the finale of her reality series, Khloe & Lamar, the reality star has had enough with waiting.

In a new scene from Monday's episode, Kardashian, 27, vents her conception frustrations to her husband, Lamar Odom, after enduring another round of fertility testing.

"I'm sorry for snapping at you and being on edge lately but I've been holding a lot of stuff in and trying not to bother you, but I've been freaking out about why I'm not pregnant," Kardashian tells her hubby, 31. "It's scary [thinking] "Oh God, what if I physically can't have kids.'"

Odom is sympathetic to his wife's concerns. "It'll work out. If something is wrong, that doesn't affect anything [we're] going to do [as a couple]," he reasons. "We're not going to give up."

Kardashian, who wed Odom in September 2009 after just 32 days of courtship, already knows what life would be like as a mom, and insists she has plenty of child-rearing experience under her belt.

"I help [sister] Kourtney a lot with Mason," she has said. "Kourtney's an amazing mom, but I've raised my little sisters Kendall and Kylie; I know I would be an amazing mom."

Check out more of the couple's frank discussion above before the Khloe & Lamar finale airs Monday at 10 p.m. (EST) on E!.

By Allison Corneau for For more Channel Surfing, click here.