Bindi Irwin usually shares fun family photos with her Instagram followers.

On Tuesday afternoon, she posted something a little bit different.

She posted a photo that showed her lying in a hospital bed.

Her 5.1 million Instagram followers were immediately concerned.

In the caption, Bindi opened up about her 10+ year battle with endometriosis.

She said she had went through doctor after doctor with no relief for her chronic pain.

After support from a friend, she was finally able to have surgery for endometriosis.

She said doctors found “found 37 lesions, some very deep & difficult to remove, & a chocolate cyst.”

She described the validation for “years of pain” as “indescribable.”