Thanks for the virtual hug.
Unfortunately the point of the test was
actually to hit the nerve directly with the needle -- it was a nerve-conduction test, after all! I was warned that it would be painful, and on the right leg it was indeed extremely painful, but I could at least handle it. On the left leg, though...
I think you're right that part of my bad reaction was due to there being a lot of tests lately, and then that one going so badly just threw me over the edge that day. Fortunately, I'm not experiencing depression, which is good, but I wouldn't blame myself if I was!