The 26-year-old conservationist took to Instagram to share how she was recovering after surgery.
Bindi shared that she had her appendix removed, and doctors found 14 lesions from her endometriosis, which were successfully removed.
She also had a large hernia repaired, which developed after giving birth to her daughter, Grace.
“I am so thankful that I got the help I needed with Dr. Seckin and Dr. Chu at Lenox Hill Hospital. After many months of a grumbly appendix, I finally had to seek help on the day of our Steve Irwin Gala,” she captioned her post.
“After consulting with Dr. Seckin, we agreed that if I flew to New York, he could also check for endometriosis again. Surgery was a success.
“My appendix was removed, along with another 14 lesions (after having 37 endometriosis lesions and a cyst removed two years ago). I also had a repair to a large hernia I acquired through childbirth four years ago.”
“And rest assured, I’ll see you at the next Steve Irwin Gala in Brisbane this November. One day at a time. Time to heal now. Sending my love to you all,” she said.
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Bindi’s mum Terri Irwin also missed the Gala to be by Bindi’s side.
Robert Irwin spoke to People, saying: "She's going to be OK, but surgery - out of all the things we were ready for, that was not one of them.
"She's just come out the other side of endometriosis and now the appendix goes. Health is so important - it really is.
"Bindi has become an incredible advocate for women's health, particularly, and I think it's really important to prioritise getting help."
The 21-year-old wildlife warrior told People that Bindi had been determined to ignore the pain she was in to attend the gala, but doctors intervened.
"She came to Las Vegas and was ready to come to the gala, put on a brave face in a lot of discomfort and a lot of pain and said, 'Nope, I'm just going to tough it out, I'm going to go for it'," he said.
"But the surgeon said, 'No, your appendix is going. That thing's gotta come out.' Health has to come first.
"She's very sad. She's devastated that she and Mum can't be here, but I know she'll make a speedy recovery."
