“I have a cyst on my ovary the size of an apple,” Hailey Bieber revealed on Monday  via her Instagram Story.  

Hailey posts a picture of herself online wearing a grey sweatshirt pulled up to reveal a bulge in her tummy.

“I don’t have endometriosis or PCOS [Polycystic Ovary Syndrome] but I have gotten an ovarian cyst a few times, and it’s never fun,” added Hailey. 

“It’s painful and achey(sic) and makes me feel nauseous and bloated and crampy and emotional,” she added.  

“Anyways…I’m sure a lot of you can overly relate and understand. We got this.” 

The Mayo Clinic's definition of ovarian cysts is "sacs, usually filled with fluid, in an ovary or on its surface."

“One ovary is located on each side of the uterus. Each ovary is about the size and shape of an almond. Ovarian cysts are common. Most of the time, you have little or no discomfort, and the cysts are harmless, " she added.

Paris Hilton

"Most cysts go away without treatment within a few months. But sometimes ovarian cysts can become twisted or burst open (rupture). This can cause serious symptoms.” 

Hailey revealed that she had "stroke-like symptoms" earlier in the year and was sent to the hospital.

Hailey stated, "On Thursday morning, I was sitting at breakfast with my husband when I started having stroke-like symptoms and was transported to the hospital," in a March Instagram Story post.

Paris Hilton