Holly Madison said "everything is ok" after her recent scare from extreme morning sickness seven months into her pregnancy.

The former Playboy model was hospitalized on Dec. 3. for the temporary illness that "freaked her out" because it normally occurs during the first trimester.

"When it started happening really late [in my pregnancy] and I was really vomiting a lot during the day, it freaked me out," the 33-year-old told Entertainment Tonight on Dec. 4. "I was told to go to the doctor and get an IV and everything. So, that was kind of scary to me just because it seemed like something so unusual, something that I hadn't read about. But everything's OK so far, so that's good."

"I'm excited to get through these last months of pregnancy," Madison added. "Hopefully no more scares."

Until their daughter's arrival, Madison has to take it easy. "I was threatened with bed rest," she admitted. "I haven't been given bed rest yet, but they're like, 'You better take it easy and don't lift anything over 5 lbs."

The former "Girls Next Door" star revealed further details about the pregnancy. "I'm almost seven months," the blonde bombshell said. "I'm due the first week of March."

Madison announced the news of the hospital visit to her fans via Twitter on Dec. 3. She posted a photo of herself sitting on a hospital bed with the IV tubes in her arm while wearing Converse sneakers. The former girlfriend of Hugh Hefner told her fans in a tweet: "Almost 7 months and morning sickness took hold! Glad to be otherwise ok.tho."

After her fans replied with supportive messages, she wrote: "Thank you for all the get well wishes! Keeping me entertained-forgot to bring a book with me." 

This will be the first child for Madison and her boyfriend, a Las Vegas promoter Pasquale Rotella. 

Madison was the second personality to be hospitalized for morning sickness this week. The Duchess of Cambridge Kate Middleton is also in a London hospital for acute morning sickness. The Royal Palace announced Monday that the couple are officially expecting their first child.

Madison shared well wishes for Middleton, who is receiving medical care at London's King Edward VII hospital for complications from hyperemesis gravidarum, an acute form of morning sickness.

"I wish her the best and I'm glad she's getting the best possible care and I'm super excited for her," Madison told Entertainment Tonight. "I think everybody wants to see [the baby] named Diana if it's a girl. I think that would melt the hearts of the world."