The nurse from earlier

The female nurse who saw you earlier busted thought the door. Luckily, you're sitting upright, so she only see the doctor with her hand up your gown. Though, it doesn't take a genius to know what she was holding.

"I'm sorry for the interrupting, but the equipment in exam room C isn't working, so we need to move the patient in here to get the measurements we need." She explained.

"That's fine. All is left is for him to give a urine sample." The doctor says, handing you an empty plastic cup with a label with your name on it.

"Just go down the hall to the restroom. Once you're done, you can leave it in the bin on the counter just outside the door. You can wait in exam room C until the other patient is done." Dr. Chase explained.

You are too surprised to question anything, so you get up and leave the room. It inst until the door closed behind you that you realize you're naked save for a thin gown, and your clothes are still inside the room!

"Are you coming out not?" The nurse says, gesturing to the restroom.

"My clothes are in there!" You squeak out.

"Don't worry, they're still going to be there when you get back. Now go give that sample."

You clutch the plastic cup in one hand, and grasps the back of your gown with the other, hoping to keep your bare ass from being exposed. With a sigh, you walk towards the restroom. On the way there, you hear a for open, and the girl from earlier walks out wearing the same gown you are! You realize she is the patient that had to be moved, and you tighten your grip on the back of your gown to make sure your bare ass isn't peeking out. You likewise turn around to see the back of her gown is open, but she was wearing a pair of red silk panties. The nurse clears her throat and you turn back to enter the restroom. It's a single stall, so you can lock the door and be alone for a few minutes. You walk up to the toilet and look down and realize you've had a hard on the whole time!