I can't stand needles, to the extent that I have actually skipped half of my inoculations just to avoid having the jab.
The first injection I remember having was at the dentists (actually, it was two injections); they were numbing my gum so they could pull a tooth. Unfortunately, because of the abcess in my gum, not only did the anaesthetic NOT work at all, but the actual entry of the needle itself was the most excruciating agony I have ever (ever) experienced.
The next injection I had was my meningitis vaccination. I had a panic attack going in to have it done, and then spent then next 18 hours with a raging fever and all the symptoms of meningitis. Not fun.