What Was Going Through Heidi Montag's Head When Leaving During L.A. Fires: 'Logical Thinking Isn't There' (Exclusive)

Heidi Montag Pratt was in "fight or flight" mode when leaving her home during the recent Los Angeles wildfires.

In an exclusive interview with PEOPLE, the pop star, 38, opens up about the "shocking" experience of evacuating — and tragically losing the home she shared with Spencer Pratt and their sons Gunner, 7, and Ryker, 2 — in the fires.

"I mean, it's shocking," says Montag. "Everything is shocking. Your brain just doesn't start working the same. It's like fight or flight and just the logical thinking isn't there."

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The "I'll Do It" hitmaker recalled frantically trying to decide what to "grab" from her closet before she fled.

"I grabbed a pair of jeans and I'm like, "Okay, now I gotta go,'" Montag recalls. "So you're just running around and wasting time just staring at something. I'm like, 'Oh my gosh, what am I doing?' And you're like, 'Am I coming back? Am I not?'"

The Hills alum "really thought she was coming back.

"So I grabbed a pair of shoes, and at the end, Spencer was like, 'Grab anything you want to keep,'" Montag recalls.

But at the time she was "too overwhelmed."

"So I grabbed the kids' things, their bears, some of their clothes and that's pretty much it," Montag concludes.

Montag says she now has "no photos" and "no memorabilia."

"Everything's gone," she says.

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Related: Spencer Pratt Would've Stayed Off Social Media During L.A. Fires If He Was 'Rich': 'I Wouldn't Be on an App' (Exclusive)

During an interview with Good Morning America earlier this month, the longtime reality TV couple revealed they will have to rebuild entirely from scratch after losing all of their material possessions in the fires.

“Spencer was like ‘Grab anything you want to keep,’" Montag shared through tears. “And I was like, ‘How do you choose?’ You know? My brain stopped working because I was so overwhelmed with so many things you can’t replace. So I grabbed my kids’ teddy bears.”

Pratt, 41, also got emotional while detailing the experience of watching his children’s bedrooms burn on the cameras.

“The worst was like our kid's room that was so magical,” he recalled, getting visibly choked up. “We do story time each night, it’s like our routine, so much love is in there. Our son’s bed started just burning in the shape of a heart. The fire started in the shape of a heart. I was like, ‘This is like, out of body insane.’ ”

Read the original article on People