Something bad happened to Machine Gun Kelly's left arm over the weekend.

While the Cleveland emcee hasn't revealed exactly what caused his injury, he's still in the hospital with an infection that almost caused doctors to amputate.

surgery went well thanks for asking. they won't release me from the hospital tho until test results indicate they don't have to do it again.

— Machine Gun Kelly (@machinegunkelly) January 18, 2016

I just wanna be sure my left arm will be fully functional again after this. — Machine Gun Kelly (@machinegunkelly) January 18, 2016

fun fact: doc said if i would've waited 12 more hours. the infection would've gotten to my bone. u know what that means??

— Machine Gun Kelly (@machinegunkelly) January 18, 2016

It's unclear how long Kelly is going to be in the hospital. But he's been treating his stay like regular work days.

cant cure the itch. must work. [ @iamjimjonsin @bk2dafullest @jimmynickles ] #newalbum even in the hospital. A photo posted by Machine Gun Kelly (@machinegunkelly) on Jan 18, 2016 at 10:27pm PST

While we wish MGK the best, a one-armed rapper could be a good gimmick.

needed to see a little bit of blood to wake up - [ there was no coffee ]

A video posted by Machine Gun Kelly (@machinegunkelly) on Jan 18, 2016 at 12:40pm PST