Why Are Pink and Chelsea Handler in the Hospital?

Celebs each post a picture while getting medical attention, so what happened?

What had Chelsea Handler in stitches and Pink seeing green?

The celebs were each checked into the hospital today, which got us a little worried for our girls, but judging by these photos, Chelsea and Pink are perfectly OK.

But what happened?

Handler was fresh out of a knee surgery and took some time to snack on (what looks to be) crackers and pose for a photo on Facebook.

"This is me post-surgery. Fortune Feimster will be filling in as the host on tonight's show with more photos of me and my knee making a quick recovery. Pls support her."

Meanwhile, Pink, who checked in because of a stomach flu, looked like she was in heaven on her Instagram picture. Sounds weird, but she has a good explanation.

"Maybe it's cause my mom was an ER nurse all my life- but throw me in a gown and a hook me up to an IV- and I'm a happy girl. Stomach flu sucks but morphine doesn't."

Good to know these two can still make us smile from a hospital bed.