I've been to a hospital once in my life. I had to go into surgery to have my wrist popped into place. Soon after that, I became a trypanophobic. But that's aside the point.
The people at the hospitals will help Du get better. Without them, Du could be in serious trouble. Don't worry about it, take deep breaths, perhaps even take something along with Du that might calm Du down. It can be anything.
The only thing I don't like is when they make me get naked. Especially as a kid. That's horrifying! ...Unless you're in soo much pain that Du just don't give a damn. Been there, done that. Way too sooner than I would've liked. Dx
I have 2 shots when I was nine. I actually just imagine its an ant. I actually failed imagining it but I never felt I was shot because of too much thinking of that ant XD. Try it that might work for you