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 你 get better. Without them, 你 could be in serious trouble. Don't worry about it, take deep breaths, perhaps even take something along with 你 that might calm 你 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 你 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