The 29-year-old "Without Me" singer shared a video of herself and fiancé Avon Jogia in the hospital.

"Happy Late Bi Visibility Day," she captioned the post on Wednesday (September 25). "This year I'm celebrating by dying with a man by my side (for legal reasons that's a joke)."

In the video, Halsey is lying in a hospital bed with an IV in her arm, holding up a peace sign and saying, "Happy Bi Visibility Day. We had a whole plan for you guys."

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After one fan asked about the pop star's health on Twitter, she replied: "I'm home from the hospital now after a few days, so a win is a win!"

Another fan asked if it was related to a chronic health issue, as she suffers from endometriosis and other conditions. She replied: "I had a seizure! Very scary! Don't recommend it!"

"I have lupus and sometimes with Lupus there's other complications. I announced a couple years ago that I had Sjogren Syndrome which is really often comorbid -- meaning going alongside of -- Lupus. Because Lupus is an autoimmune condition, sometimes it can surpress your immune system to the point that you develop a T cell disorder," she explained on SheMD earlier this year.