Real Housewives of Orange County filmed their season eight reunion a few weeks ago -- and the drama got so intense for Vicki Gunvalson that she puked three times.

The veteran and longest-running Housewife admitted that she was so nervous, she got sick.

Before filming, "You’re feeling like, Oh my God, what’s going to happen? What are they going to pull out of their ass to make this reunion powerful?” Gunvalson explained to OK! Magazine.

“I had a whole folder of stuff, and if they were coming at me, I was prepared! I spent some time trying to figure out why Lauri was doing what she was doing, so I had my facts ready,” she said.

Knowing there was plenty of drama ahead, she got very sick before filming.

“Getting ready to get on set, I vomited three times. I didn’t even have any food in my stomach, I was just so nervous," the RHOC said.

Bravo teased the upcoming reunion with the following info in a press release:

"Andy Cohen sits down with Vicki Gunvalson, Tamra Barney, Gretchen Rossi, Alexis Bellino, Heather Dubrow and Lydia McLaughlin to revisit the drama from season eight. The epic three-part reunion begins as Vicki and Gretchen go head to head digging up the past and slinging mud as they vie for Tamra's friendship.

The drama then turns to new housewife Lydia who is called to task about her outspokenness and forced to defend herself against accusations of stirring the pot. And then the tension hits a boiling point when original housewife Lauri Petersen returns to defend her claims of Vicki's infidelities instigating an explosive fight that changes the nature of their friendship forever."

The Real Housewives of Orange County reunion special airs Monday, Aug. 12 at 8 p.m. ET on Bravo.

Tags: Real Housewives of Orange County Vicki Gunvalson Bravo