What can I do when I have to get my shot?

Because of the new law now, I have to get a shot yearly of TDap. I haven't gotten a shot since 4th grade, so it has been 3 years. I am deathly afraid of shots, and I am not exaggerating at all. In fourth grade, I had to get two shots. When I went inside the office, I started hyperventilating. Then, once they started wiping my arm, I fainted just a little, like when you get a head rush when you wake up in the morning. When she started prepping the needle, I bolted from the office. Three nurses had to grab me and bring me back to the office. I was screaming bloody murder, and then four more nurses came in and had to hold me down, on the ground, while I got the shot. So, while I was getting the shot 8 full grown women were holding me down. And they weren't ordinary nurses. I go to the Navy Base Clinic in Port Hueneme for all medical things. So they were Navy women, worked on the ships and worked with all the military guys. So, I can be very resistant. I can not stand the sight of them, let alone getting one. And now I have to get one next week, or I can't go to school in the fall. I have no idea what to do. I have tried breathing, music, reading, looking at something else, pinching my arm while the were doing it, and tons more. My mom is actually going to ask if I can get the knock out pills, so I don't remember the shot. Is there anything else I could possibly do?