But Derek told ET on Monday that he's used to performing "in pain." "When you're used to pain, you know, someone's like, 'Oh my ankle hurts, or my...I don't know why I did this, my boob hurts,' but no, you get used to it, you have to be," he shared.

"It's funny, when I'm actually here [LA], by this [point in the] season, I'm normally a lot more sore, a lot more tired," he admitted.

"I think it's because I've personally been taking care of myself so much more than I used to.

I'm getting a cardio workout everyday doing the shows so I actually feel more in shape than I normally do at this point." PHOTOS: Uh Oh!

Derek also posted a pic of both of his feet bandaged on Instagram, writing, "Just getting home from the hospital. I'm in utter disbelief." He also later deleted the update.

No word yet on how Derek's injury will affect his future on the show this season, but a source tells E!

News he may have broken a toe, as well as severely sprained his ankle, suffering possible ligament damage.

An MRI is reportedly scheduled for today to see just how serious the injury to his ankle is.

Stars Post Pics from the Hospital Unfortunately, that changed Monday night when Derek ended up in the hospital.

According to Maria Menounos, Derek's former partner who he was practicing a routine with for the anniversary special, he hurt his foot after he smashed it on a piece of equipment. News that he then injured himself further when he fell down the stairs when he grabbed ice to put on his foot, rolling his ankle. She also shared a video of the two rehearsing prior to his injury, in which she's the one who actually gets injured when she bumps her head on the dance floor.

"Really angry at this stupid stair for hurting our @derekhough out last night. Derek was accompanied to the hospital by his pal and fellow pro Mark Ballas.

"Long night in the ER with @derekhough nothing worse than seeing a fellow dancer get hurt especially your brother," Mark captioned a pic of him pushing Derek in a wheelchair in a now-deleted Instagram post (which Maria reposted).