'Harry Potter' star Jessie Cave in hospital after catching COVID while pregnant

• Jessie Cave, who played Lavender Brown in the "Harry Potter" movies, posted a photo from hospital.
• Cave announced her pregnancy in December and tested positive for COVID-19 last month.

The actor and author Jessie Cave is in the hospital after contracting COVID-19 while pregnant with her fourth child.

Cave, who starred as Lavender Brown in the "Harry Potter" movies, posted a picture of herself in a hospital bed on Instagram on Sunday.

"Triage, once again …… anyone else had Covid in 3rd trimester & had it hit them like a tonne of bricks for weeks?" she wrote in a caption.

The actor announced her pregnancy in December and said she had tested positive for COVID-19 last month.

In a follow-up Instagram story, Cave wrote, "Also — has anyone taken the anti-nausea drug and it made them feel worse?"

Cave has three children with her partner, the comedian Alfie Brown.

Last year, the actor said she struggled with body-image pressure while appearing as Lavender Brown in the "Harry Potter" saga.

"I gained a lot of weight after doing Harry Potter, just because I wasn't starving myself. And I was growing up and that's just what happens," she told The Independent.

Cave said she gained weight between shooting "The Half-Blood Prince" and "The Deathly Hallows," and that she was treated differently when she returned to set.

"It was horrible," she said. "It was probably more me and my insecurity, knowing that I wasn't fitting into the same size jeans, but it wasn't a time where actresses were any bigger than a size eight."

She continued: "And in the previous film I had been, and now I was a size 12. So that was horrible. It was a really uncomfortable experience."