I am scared of getting a blood test, what should I do?

I went to my doctor yesterday, he thinks I may have a thyroid problem and wants to send me do blood tests. But I am afraid of doing it. I have always hated the sight of blood even seeing it on TV is too much for me. and just the idea of getting a needle in me drives me out of my mind. i am afraid when they needle me I’ll freak out and run or faint. Thinking of skipping the blood test. Is there something I can do. thanks

Age: 21
Medications: None