Someone's Under the Bed

I'm an obstetrics and gynecology nurse. Lately, my coworkers have been acting strange, always telling me, "There's something off about this hospital. Be careful at night."

I smiled. "It's fine. I'm not scared easily."

But during my night shift, a strange patient said to me, "Nurse, could you check if there's something under the bed?"

So I crouched down and took a look...